McCulloch 532 43 21-09, Operator'S Manual

11

Fig. 11

Fig. 12

MAINTENANCE

Disconnect spark plug wire before performing any maintenance (except car bu re tor adjustment) to 

prevent accidental start ing of engine.
Prevent fires!  Keep the engine free of grass, leaves, spilled oil, or fuel.  Re move fuel from tank 

before tipping unit for maintenance.  Clean muffler area of all grass, dirt, and debris. 
Do not touch hot muffler or cylinder fins as contact may cause burns.

ENGINE

LUBRICATION

Use only high quality detergent oil rated with API service 

classification SG-SL.  Select the oil’s SAE vis cos i ty grade 

according to your expected temperature.

NOTE:

  Although multi-viscosity oils (5W-30, 10W-30, etc.) 

improve starting in cold weather, these multi viscosity oils 

will result in increased oil consumption when used above 

32°F (0°C).  Check your engine oil level more frequently to 

avoid possible engine damage from running low on oil.
Change the oil after every 25 hours of operation or at least 

once a year if the tiller is not used for 25 hours in one year.
Check the crankcase oil level before starting the engine 

and after each five (5) hours of continuous use.  Add SAE 

30 motor oil or equivalent.  Tighten oil filler plug securely 

each time you check the oil level.

TO CHANGE ENGINE OIL (See Figs. 11 and 12)

Determine temperature range expected before oil change.  

All oil must  meet API service classification SG-SL.
•  Be sure tiller is on level surface.

•  Oil will drain more freely when warm.

•  Catch oil in a suitable container.

•  Remove drain plug.

•  Tip tiller forward to drain oil.

•  After oil has drained completely, replace oil drain plug 

and tighten securely.

•  Remove oil filler plug.  Be careful not to allow dirt to 

enter the engine.

• 

Refill engine with oil.  See “CHECK ENGINE OIL LEVEL” 

in the Operation section of this manual. 

engine_art_12

OIL 

DRAIN

PLUG

OIL FILLER

PLUG

OIL LEVEL

4%-0%2!452%ª2!.'%ª!.4)#)0!4%$ª"%&/2%ª.%84ª/),ª#(!.'%

ªªªªªªªªªªªªªªªªªªªªªªªªªªªªªªªªªªªª3!%ª6)3#/3)49ª'2!$%3

Air Cleaner 

Screws

Cover

Air Clean er 

Car tridge

Pre-Cleaner

AIR CLEANER (See Fig. 13)  

Service  air cleaner cartridge every twenty-five hours, more 

often if engine is used in very dusty conditions.

•  Loosen air cleaner screws, one on each side of 

cover.

•  Remove air cleaner cover.

•  Carefully remove air cleaner cartridge. Be care ful. Do 

not allow dirt or de bris to fall into carburetor.

•  Clean by tapping gently on a flat surface.

•  If very dirty or damaged, replace cartridge.

•  Clean and re place cover. Tighten screws securely.

IMPORTANT:  

PETROLEUM SOLVENTS, SUCH AS KER O SENE, 

ARE NOT TO BE USED TO CLEAN THE CAR TRIDGE.  THEY 

MAY CAUSE DETERIORATION OF THE CARTRIDGE.  DO 

NOT OIL CARTRIDGE.  DO NOT USE PRESSURIZED AIR TO 

CLEAN OR DRY CARTRIDGE.

Fig. 13