A Tune-Up, see the steps listed below, would normally be performed on relatively new engines brought in for minor
difficulties. By performing these steps you will either be sure that the engine is functioning properly or will know what major
repairs should be made.
The steps are also covered in the Overhaul Procedure and will normally be performed as a part of the complete overhaul.
Remove air cleaner, check for proper servicing
Check oil level and drain. (Clean fuel tank and
lines if separate from carburetor).
Remove blower housing, inspect rope and
rewind assembly and starter clutch.
Clean cooling fins and entire engine. Rock
flywheel to check compression .
Remove carburetor, disassemble and inspect
for wear or damage. Wash in solvent, replace
parts as necessary and assemble. Set initial
Inspect crossover tube or intake elbow for
damaged gaskets .
Check governor blade, linkage and spring for
damage or wear, if mechanical also check
Remove flywheel, check for seal leakage, both
flywheel and PTO sides. Check flywheel key.
Remove breaker cover and check for proper
Replace or clean and adjust. Check plunger .
Check coil, inspect all wires for breaks,
damaged insulation. Be sure lead wires do not
touch flywheel. Check stop switch and lead.
Replace breaker cover, use sealer where
Install flywheel, time engine if necessary. Set
air gap. Check for spark with #19051 tester.
Remove cylinder head, check gasket, remove
spark plug, and clean carbon, inspect valves
for seating .
Replace cylinder head, torque to specified
torque, set spark plug gap or replace plug if
Replace oil and fuel, check muffler for
restrictions or damage .
Adjust remote control linkage and cable if
used, for correct operation .
Service air cleaner, check gaskets and
element for damage .
Run and adjust mixture and top speed.