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MQ BA-SERIES, Operation And Parts Manual

The MQ BA-SERIES is a must-have equipment for builders and contractors. Enhance your productivity with this sturdy and reliable machine. Maximize its potential by referring to the comprehensive Operation and Parts Manual. Download the manual for free from our website, where you can find a plethora of user manuals to cater to your needs.

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PAGE 34 — BA-SERIES  WALK-BEHIND TROWEL— PARTS & OPERATION MANUAL — REV. #3 (11/30/04)

Figure 48.  Hand Clutch Adjustment

11. Carefully lift 

the 

upper trowel assembly

, line up the key-

way on gear box main shaft and insert into spider assembly.

12. Reinstall square head cone point into spider plate and

tighten in place. Tighten jam nut. Use care in making sure
point of set screw engages groove in gear box main shaft.

13. Lubricate all grease points (zerk fittings) with premium

"

Lithum 12"

 based grease, conforming to NLG1 Grade #2

consistency.

Testing

1. Place trowel in test area, start engine and test trowel for

smoothness.

2. If trowel bounces has excessive vibration or does not run

smoothly repeat alignment procedure.

Changing a Blade

Whiteman recommends that

 all the blades be changed at the

same time

. The machine may wobble or bounce if only some of

the blades are changed at one time.

1. Place the machine on a flat, level surface. Adjust the blade

pitch control to make the blades as flat as possible. Note the
blade orientation on the trowel arm.

Before removing the blades, please note
the orientation of the blade on the trowel
arm.

NOTE

1. Remove the three bolts and lock washers that secure the

blade to the trowel arm. Remove the blade.

2. Using a wire brush, scrape all concrete particles  and foreign

debris from the trowel arm.

3. Install the new trowel blade onto the trowel arm. Make sure

blade is installed correctly, maintaining the proper orienta-
tion for direction of rotation

.

4.

Reinstall 

 the three bolts and lock washers that secure the

blade to the trowel arm. Tighten all three bolts securely.

5. Repeat steps 1-4 for all remaining blades.

BA-SERIES TROWEL — MAINTENANCE

Hand Clutch Adjustment

Some trowels  are  equipped with a hand-operated clutch instead
of an automatic centrifugal clutch. Two types of hand clutches
have been installed. Both are belt-tightener type clutches. They
operate by removing 

slack

 in the V-belt which then transmits

power from the engine to the gearbox.

There are two reasons to adjust the hand clutch: 1) operator
comfort; 2) initial belt stretch and break-in.

The easiest and most simple adjustment is to adjust the clutch
cable housing using the adjustment nut (Figure 48) located on the
clutch lever. Rotating the nut provides either more or less
(depending upon the direction of rotation) clutch engagement.

Hand Clutch Disengagement

1. Start the trowel as outlined in the "

Initial Start-up

" section in

this manual. Move the throttle lever so that the engine is
running about 1/4 to 1/3 of full speed.

2. Grip the trowel handle firmly and carefully engage the clutch

by squeezing the clutch lever toward the handle with your left
hand. After the trowel is stabilized and you feel comfortable
with its operation, use your right hand to adjust the housing
adjustment nut.

3.

Rotating the nut so that it backs out of the lever housing
increases the engagement and also the squeezing force
required to keep it engaged.

Too much squeezing force may cause premature hand
fatigue. Too little squeezing force may cause belt slippage
and premature belt wear. Each operator should experiment
with the adjustment to get the optimum combination of
squeeze force and belt grip.

4.

After initial break-in (approximately 8 hours) the above
procedure should be repeated to attain optimum operator
comfort and belt wear.

5.

After considerable belt wear, the adjustments mentioned
above may have a little or no effect on clutch engagement. If
this is the case, the belt should be replaced.

Summary of Contents for BA-SERIES

Page 1: ...NGTON AVE 800 427 1244 CARSON CALIFORNIA 90746 FAX 800 672 7877 310 537 3700 SERVICE DEPARTMENT TECHNICAL ASSISTANCE 800 421 1244 800 478 1244 FAX 310 537 3927 FAX 310 631 5032 E mail mq multiquip com www multiquip com Atlanta Boise Dallas Houston Newark Montreal Canada Manchester UK Rio De Janiero Brazil Guadalajara Mexico MODEL SERIAL P N 20905 ...

Page 2: ......

Page 3: ... AND SERIAL NUMBER ON HANDWHEN CALLING PARTS DEPARTMENT 800 427 1244 or 310 537 3700 FAX 800 672 7877 or 310 637 3284 SERVICE DEPARTMENT TECHNICAL ASSISTANCE 800 478 1244 or 310 537 3700 FAX 310 537 4259 WARRANTY DEPARTMENT 888 661 4279 or 310 661 4279 FAX 310 537 1173 MAIN 800 421 1244 or 310 537 3700 FAX 310 537 3927 ...

Page 4: ...itch Handle Assy 44 46 Thrust Bearing Kit Assy 48 49 4 Blade Spider Assy 50 51 Gearbox and Engine Mounts Assy 52 54 Engines Honda Robin Briggs Stratton 56 57 Hand Clutch Assy 58 59 Guard Ring Assy 60 61 Stabilizer Ring Assy 62 63 Blades and Adjustment Fixture Assy 64 65 Lifting Bale Assy Option 66 67 HONDA GX240K1QA2 ENGINE Air Cleaner Assy 68 69 Camshaft Assy 70 71 Carburetor Assy 72 73 Control A...

Page 5: ...f line items ordered Additional Discount 1 9 items 3 10 items 5 Now Direct TOLL FREE access to our Parts Department Toll free nationwide 800 421 1244 Toll free FAX 800 6 PARTS 7 800 672 7877 Dealer account number Dealer name and address Shipping address if different than billing address Return fax number Applicable model number Quantity part number and description of each part Specify preferred me...

Page 6: ...O E T A D 1 y l e t e l p m o c l a u n a M s r o t a r e p O d a e R 2 d n a e n i g n e f o g n i k c e h c s t n e n o p m o c f o n o i t a c o l t u o y a l e n i h c a M l e v e l d i u l f x o b r a e g 3 e r u d e c o r p g n i l e u f e r m e t s y s l e u F 4 g n i n n u r t o n e n i h c a m s l o r t n o c f o n o i t a r e p O 5 n o i t a r e p o h c t i w s l l i k s l o r t n o c y ...

Page 7: ...RIES TROWEL DAILY PRE OPERATION CHECKLIST T S I L K C E H C N O I T A R E P O E R P Y L I A D 1 l e v e L l i O e n i g n E 2 l e v e L d i u l F x o b r a e G 3 s e d a l B f o n o i t i d n o C 4 n o i t a r e p O h c t i P e d a l B 5 n o i t a r e p O h c t i w S l l i K y t e f a S 6 n o i t a r e p O h c t u l C ...

Page 8: ...follow directions CAUTION You CAN be injured if you DO NOT follow directions HAZARD SYMBOLS Engine exhaust gases contain poisonous carbon monoxide This gas is colorless and odorless and can cause death if inhaled NEVER operate this equipment in a confined area or enclosed structure that does not provide ample free flow air Potential hazards associated with B Series trowel operation will be referen...

Page 9: ...result if operating in speed ranges above maximum allowable Respiratory Hazard ALWAYS wear approved respiratory protection ALWAYS wear approved eye and hearing protection Sight and Hearing hazard Equipment Damage Messages Other important messages are provided throughout this manual to help prevent damage to your trowel other property or the surrounding environment This walk behind trowel other pro...

Page 10: ...ation and safety decals when they become difficult read ALWAYS check the trowel for loosened threads or bolts before starting ALWAYS use extreme caution when workingwithflammableliquids When refueling stop the engine and allow it to cool NEVER smoke around or near the machine Fireorexplosioncouldresultfrom fuel vapors or if fuel is spilled on a hot engine NEVER operate the trowel in an explosive a...

Page 11: ... the spark plug wires before attempting any type of service Securely support any machine components that must be raised NEVERlubricatecomponentsorattemptserviceonarunning machine DO NOT use food or plastic containers to dispose of hazardous waste DO NOT pour waste oil or fuel directly onto the ground down a drain or into any water source CAUTION CAUTION CAUTION CAUTION CAUTION Emergencies ALWAYS k...

Page 12: ...t it is mandatory to wear safety shoes with extra protection steel toed This is the symbol for belt drive This is the symbol for gear drive Radiating heat symbol Symbol indicates equipment is hot Symbol for examining or checking of the machine Mostly used for maintenance Check lubrication oil in gearbox Symbol indicates that it is mandatory to wear gloves P N 11247 Part of decal kit 12620 P N 1124...

Page 13: ...l on curing concrete in a manner mostoftenexperiencedin normal circumstances Values were obtained from all three axes of motion The values shown represent the maximum RMS value from thesemeasurements SideView s n o i t a c i f i c e p S l e w o r T s e i r e S A B 1 e l b a T k o o H g n i t f i L t h g i e H A m m 2 6 7 8 n i 5 4 3 r e v e L t n e m e g a g n E t h g i e H B m m 2 4 4 0 1 n i 1 1...

Page 14: ...c r i A l a t n o z i r o H V H O r e d n i l y C e n i g n E e n i l o s a G t f a h S e l g n i S e k o r t s 4 d e l o o c r i A l a t n o z i r o H V H O r e d n i l y C e n i g n E e n i l o s a G t f a h S A N e k o r t S X e r o B n i 0 3 2 X n i 0 9 2 m m 8 5 x m m 3 7 n i 4 2 2 X n i 5 9 2 m m 7 5 x m m 5 7 A N t n e m e c a l p s i D c c 1 8 4 1 c c 1 3 5 1 A N t u p t u O x a M M P R 0 ...

Page 15: ...The gearbox controls the rotational speed of the trowel and is equipped with two shafts input and output Spider The vertical output shaft of the gearbox connects to a cast hub called the spider The spider has either 3 or 4 arms that extend outward that are used for attachment of blades or other accessories Remember as the gearbox output shaft rotates so does the spider assembly NEVER attempt to li...

Page 16: ...MPONENTS Figure 3 BA Series Walk Behind Trowels F IN IS H F IN IS H J C O M B O C O M B O P R E L O A D T R IM IN D IC A T O R P R E L O A D T R IM IN D IC A T O R F IN IS H F IN IS H B C O M B O C O M B O W W 13 13 15 10 STANDARD HANDLE 12 11 7 6 7 8 8 5 3 2 5 6 4 16 17 18 14 QUICK PITCH HANDLE 9 20 4 1 3 2 ...

Page 17: ...he gearbox 9 Weights The trowel may be equipped with two 10 lbs weights The weights may be removed to reduce the operating weight of the trowel 10 Trowel Lifting Point Insert the auxiliary lifting tube here See Figure 21 11 Pitch Control standard models Turn this StarWheel clockwise for increase blade pitch and counter clockwise for decrease blade pitch 12 Clutch Lever Clutch engagement lever When...

Page 18: ...7 mm 0 028 0 031 inch Clean spark plug once a week 9 Muffler Used to reduce noise and emissions Enginecomponentscangenerateextremeheat To prevent burns DO NOT touch these areas whiletheengineisrunningorimmediatelyafteroperating NEVER operatetheenginewiththemufflerremoved 10 Fuel Tank Holds unleaded gasoline For additional information refer to engine owner s manual DANGER NOTE Operating the engine ...

Page 19: ... or backward 2 On Quick Pitch models pivot the T handle back full pitch Figure 6 This will relax the spring inside the handle tube On either model spread the handle bar ends just enough to engage the teeth on the handle tube Attach the hand wheel assembly position handlebar to desired location and tighten hand wheel firmly Figure 6 Handlebar Installation 2 Feedthethrottlecablethroughthecablehousin...

Page 20: ... 12 No Pitch Position Standard Figure 13 No Pitch Position Quick Pitch 1 Exposethepitchcabletomaximumbyadjustingthehandle pitch to the no pitch position On the standard model turn the pitch control counter clockwise Figure 12 On the Quick Pitch model pivot the pitch handle forward or no pitch Figure 13 Figure 9 Throttle Cable Connection ROBIN 7 These are general instructions Installation of the th...

Page 21: ...Behind trowel 5 Test the pitch control operation and adjust if necessary 5 Insert the cable end through the yoke eyelet Figure 15 Tighten the first brass set nut by hand to remove all the slack from the cable 6 Usingawrench tightenthesecondbrasssetnutupagainst the yoke boss This will lock the cable in place 7 Useawrenchandfinishtighteningthefirstbrasssetnutup against the yoke boss 2 Lock the sprin...

Page 22: ...arburetor and air cleaner 3 Check theairfilterfor dirtanddust Ifairfilterisdirty replace air filter with a new one as required 4 Check carburetor for external dirt and dust Clean with dry compressedair 5 Checkfasteningnutsandboltsfortightness Engine Oil Check 1 Tochecktheengineoillevel placethe trowelonsecurelevel ground with the engine stopped 2 Remove the filler dipstick from the engine oil fill...

Page 23: ...isconnected or improperly maintained Hand Clutch Some finisher models are equipped with a hand operated clutch These units are not equipped with a safety kill switch The unitautomaticallystopsrotatingwhentheclutchleverisreleased DO NOT let the machine sit unused with the engine at high speed for an extended period of time It will cause premature belt wear or may destroy the belt Always set the eng...

Page 24: ...ert the tube into the socket located on the opposite side of the gearbox Figure 21 from the handle Make sure that the hole in the tube engages with the pin in the socket With one person lifting from the main handle and another lifting from the auxiliary lifting tube pick up the machine to move onto a slab Figure 21 Lifting theTrowel Lifting Bale Option The lift bale is optional on new trowels It p...

Page 25: ...ure 26 and slowly pull it out The resistancebecomesthehardestatacertainposition corre spondingtothecompressionpoint Pullthestartergripbriskly andsmoothlyforstarting Figure 26 Starter Grip 6 If the engine has started slowly return the choke lever Figure 25 to the CLOSED position If the engine has not startedrepeatsteps1through5 7 Before the trowel is placed into operation run the engine for several...

Page 26: ...utch Figure 30 set your engine speed with the throttle then pull on the hand clutch lever to startthebladesturning Adjustthebladespeedafterthehand clutch is fully engaged Figure 30 Hand Clutch Lever 2 To maneuver the trowel gently lift up on or press down on the main trowel handle To move the machine to the operator s left lift up on the handle to move machine to the right push down on the handle ...

Page 27: ...practice as if you were finishing a slab of concrete Practice edging and covering a large area Remember a good finishing technique is to work backwards Be careful when moving backwards so that hazards can be avoided The best way to get accustomed to the trowel is repeated use CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION NEVER place your feet or hands inside the g...

Page 28: ...t Discs Optional These round discs Figure 35 attach to the spiders and allow the machine to float on wet concrete The disc design allows early floating and easy movement from wet to dry areas They are also very effective in embedding large aggregates and surface hardeners Clip On Float Blades Optional These blades will clip Figure 34 on to an existing installed blade allowing your finisher to floa...

Page 29: ...ce imperfectionsorjoints Theseattachmentsallowgreaterutilization ofyourtrowel Figure36illustratesatypicalgrindingdiskassembly complete with hub and stone mounting plate Figure 38 Trowel Arm Adjustment Fixture BA SERIES TROWEL OPTIONS Lifting Bale There is a heavy duty center balance type lifting bale Figure 37 made specifically for your trowel These bales are ideal for lifting and transporting you...

Page 30: ... 10 max clearance lower wear plate All alignment bolts should be spaced the same distance from the lower wear plate Figure 40 below illustrates the correct alignment for a spider plate as shipped from the factory Figure 40 Correct Spider Plate Alignment At the front of the book Page 7 there is a DailyPre Operation Checklist Make copies of this checklist and use it on a daily basis CAUTION CAUTION ...

Page 31: ...igure 41 Spider Gearbox Removal b Loosen the jam nut and cone point square head set screw andcarefullylifttheuppertrowelassemblyoff ofthespiderassembly Aslighttapwitharubbermallet maybenecessarytodislodgethespiderfromthemain shaftofthegearbox c If the trowel is equipped with an outer stabilizer ring Figure 42 remove the four bolts at the end of each spiderarm Figure 42 Stabilizer Ring d Examinesta...

Page 32: ...entheroundofthetrowelarmshaftandthe testsurface Figure 46 Trowel Arm FlatnessTest BA SERIES TROWEL MAINTENANCE 3 Should the trowel arm inserts bronze bushing come out withthetrowelarm removethebushingfromthetrowelarm andsetasideinasafeplace Ifthebushingisretained inside thespiderplate carefullyremovethebushing 4 Examinethebronzetrowelarmbushinginsert Figure44 cleanifnecessary Replacebushingifoutof...

Page 33: ...kingnutonthetrowelarmlever thenturnthe trowel arm adjusting bolt until it barely touches 010 the adjusting bolt on the fixture 6 Afterthecorrectadjustmenthasbeenmade tightenlocknut on trowel arm lever to lock in place 7 Loosen locking bolts on adjustment fixture and remove trowelarmfromfixture 8 Repeatsteps2 7fortheremainingtrowelarms Re Assembly 1 Cleanandexaminetheupper lowerwearplatesandthrust ...

Page 34: ... BA SERIES TROWEL MAINTENANCE Hand Clutch Adjustment Sometrowels are equippedwithahand operatedclutchinstead of an automatic centrifugal clutch Two types of hand clutches havebeeninstalled Botharebelt tightenertypeclutches They operate by removing slack in the V belt which then transmits power from the engine to the gearbox There are two reasons to adjust the hand clutch 1 operator comfort 2 initi...

Page 35: ...l e w o r t t n e B e h t f o e n o f I s m r a l e w o r t t n e b r o f y l b m e s s a r e d i p s e h t k c e h C y l e t a i d e m m i t i e c a l p e r t n e b y l t h g i l s n e v e s i s m r a s g n i h s u b m r a l e w o r T y b e n o d e b n a c s i h T s s e n t h g i t r o f s g n i h s u b m r a l e w o r t e h t k c e h C 8 1 n a h t e r o m s i e r e h t f I n w o d d n a p u s m ...

Page 36: ... n e e c a l p e R t n e m t s u j d a f o t u o h c t u l c d n a H l a u n a m s i h t f o n o i t c e s e c n a n e t n i a m n i s n o i t c u r t s n i r e p t s u j d A h c t u l c d n a h e v i t c e f e d r o n r o W s t r a p y r a s s e c e n s a s t r a p e c a l p e R x o b r a e g n i s g n i r a e b n r o W k c e h c y t l u c i f f i d h t i w s e t a t o r t f a h s f I d n a h y b...

Page 37: ...i w g u l p k r a p S g u l p k r a p s e v i t c e f e d e c a l p e R g n i r i w k r a p s e l b a l i a v a s i l e u f t r a t s o t t l u c i f f i D l a m r o n s i n o i s s e r p m o c d n a t n e s e r p s i e p y t l e u f g n o r W e c a l p e r d n a m e t s y s l e u f h s u l F l e u f f o e p y t t c e r r o c h t i w m e t s y s l e u f n i t s u d r o r e t a W m e t s y s l e u ...

Page 38: ...n the Remarks Column Serial Numbers Where indicated this indicates a serial number range inclusive where a particular part is used Model Number Where indicated this shows that the correspondingpartisutilizedonlywiththisspecificmodelnumber or model number variant Section 3 Items Found In the Items Number Column All parts with same symbol in the number column or belong to the same assembly or kit No...

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