Johnson Service Bulletin SB-901 - 1962 Engine Torque Specifications

May 21, 1962

Bulletin No. SB-901 Specifications

SUBJECT: Torque chart for 1962 engines (over)... screws, nuts and bolts. (Refer to Service Manuals for torques on engines prior to 1962)

Proper tightening of screws, nuts and bolts is vitally important in properly ser- vicing Johnson engines. Overtightening may result in stripped threads which increases labor costs to drill, tap and install heli-coils. Leaving a screw too loose may allow it to back out completely. Internally, such screws will cause extensive damage to the powerhead and/or gearcase. Externally, loose screws invite leakage at gaskets or between crankcase halves, etc.

Needless to say, the only certain, and recommended, method of properly tightening screws is by using a torque wrench. These wrenches are readily available and may be purchased at reasonable cost from local parts houses, tool jobbers and mail order houses. They will rapidly pay for themselves in expert workmanship.

GENERAL TORQUE VALUES:

These apply to all engines unless otherwise specified under the individual engine specifications contained on the reverse side.

JOHNSON MOTORS

W. W. DeWees Service Department

WWD:eb

NOTE: Post on all indexes for models indicated on reverse side.