SPARK PLUG
Coat Ref. 40 (890244) Spark Plug threads first with Primer-N prior to assembly and torque to 15 –20 in. lb.,
then apply one drop of Loctite® 290.
Apply Dielectric Grease Part No.#893766 to end of spark plug before installing lead.
DRIVER SEAL REF. #54
Seal, Ref. #54, is marked with the word “OUT”. Install this side out and orient seal to match driver blade
profile.
LUBRICANTS
Do not use oil or grease on this unit except as specified in instruction manual.
CLAMP REF.#91
Clamp Ref. #91, should be installed with Oetiker Pincers (Model 10981) or Chaftsman®
(Model
9
45175)
PISTON BUMPER 880366 REF. 47
To ease assembly of the subject part, lightly lubricate with soapy water or hand soap prior to pressing into
cylinder.
PUMP HOUSING REF. 4 & MAGAZINE WASHER REF. 127
Units have been built with 2 different pump housings. They can be identified by the casting number which is
located between the 2 magazine screw mounting bosses. Pump housings with casting number 880394 require
washer 848741(Ref. # 127) and this washer should be added to units that don't have them.
Pump housings with casting number 891141 don't require these washers and when servicing units with this
housing the washers should be discarded.
AIR FILTER REF. 69
Air filters should be lightly oiled with automotive oil SAE 5 or 10(do not use multi
viscosity oils) or
similar before installation. Blot excess oil with paper towel.
It is highly recommended that the air filter be replaced when it requires servicing. However, if a new
filter is not available the filter can be washed in a solution of warm soapy water, thoroughly dried, oiled
per the above, excess oil blotted with paper towel, and reused.
INSTALLING SCREWS & NUTS
Use hand tools only to reassemble unit.
DO NOT USE POWER TOOLS.
When reassembling unit proper torque’s and adhesives must be used. Failure to follow this guideline will
result in premature failure.
SERVICE NOTES
CFN250
LOCTITE
®
is a registered trademark of the
LOCTITE
CORP.., Newington, CT
Ref.
Desc.
Torque
Loctite®
9
Screw
Torque 15 - 20 in. lb
10
Screw
Torque 25 - 30 in. lb
11
Lock Nut
LOCTITE 222
12
Screw
Torque 5 - 10 in. lb.
14
Screw
Torque 40 - 50 in. lb
LOCTITE 242
18
Screw
Torque 15 - 20 in. lb
22
Screw
Torque 40 - 50 in. lb.
40
Spark Plug
Torque 15 - 20 in. lb
PRIMER N / LOCTITE 290
59
Screw
Torque 55 - 65 in. lb.
LOCTITE 242
81
Screw
Torque 15 - 20 in. lb
86
Screw
Torque 40 - 50 in. lb
92
Screw
Torque 25 - 35 in. lb
