Maintenance
Fuel Filter
3
Maintenance
WM doc 8/17/21
3-2
Replace the air filter (cleaner) every 200 hours of operation.
Replace the pre-cleaner (element wrapper) every 2000 hours of operation.
3.4 Fuel Filter
Replace the fuel filter every 100 hours of operation or as required for engine performance.
3.5 Battery
Check the battery electrolyte level every 50 hours of operation. See manufacturer’s manual for instructions.
DANGER!
Batteries expel explosive gases. Keep sparks, flames, burning cig
-
arettes, or other ignition sources away at all times. Always wear safety gog
-
gles and a face shield when working near batteries. Failure to do so will cause
serious injury.
1
WARNING!
Battery posts, terminals and related accessories contain lead and
lead compounds, chemicals known to the State of California to cause cancer
and reproductive harm. Wash hands after handling.
3.6 RPM Adjustments
WARNING!
Remove the blade before performing any engine service. Failure
to do so may result in serious injury.
Check the RPM with a tachometer every 200 hours of operation.
Before checking the RPM, make sure belt and brake strap tensions are correct (See Sawmill Maintenance). Also check oil, fuel,
and coolant levels.
Check that the cable spring, cable guide, cable, and throttle brackets are aligned.
NOTE:
It is important that the above compo
-
nents are aligned. Proper alignment allows any slack in the cable (when engine is idling) to slide down into the cable spring.
This maintains free operation of the cable and prevents the cable from kinking. Make sure the shoulder bolt does not rub
against the crankcase vent tube.
1.
Start the engine to measure the low-end RPM.
2.
Refer to the engine manual to adjust the low-end RPM.
3.
Engage the clutch handle to throttle the engine and measure the high-end RPM. The high-end RPM is factory-set at 3750.
Readjust the throttle cable if necessary to increase or reduce the high-end engine speed.
The throttle cable should be tensioned just enough so that the engine revs as soon as the clutch/brake handle is engaged.
NOTE: A properly adjusted throttle will extend the cable spring 1/4” to 3/8” (6.4 - 9.5 mm) when running and have a slight
amount of slack in the cable when idling.
1. Battery Council International, copyright 1987
Engine
High End RPM
Low End RPM
G19
3750
1800
TABLE 3-1
