Governor Adjustment; A'djusting Valves - Onan MDJF Series Operator's Manual And Parts Catalog

GOV ERNOR
ARM - - - - , - - - /
SENSITIVITY
ADJUSTING
RATCHET
\
GOVERNOR STUD
SPEED
ADJUSTING
NUT
FIGURE 18. GOVERNOR ADJUSTMENT
2. Now turn the flywheel clockwise for an additional 10 to
4. Using a feeler gauge, check the clearimce between the
45 degrees. There is no timing mark for this position so
rocker arm and the valve (see Fig. 20). Increase
or
it must be estimated. With the piston located in this
reduce the clearance until the proper gap is established".
position, it will be in its power stroke with both valves
Correct valve clearance is .017" intake and .017"
completely closed.
exhaust.
3. To change the setting of valve Clearance, adjust the
5. Always adjust the valve clearances in the firing order
locknut which secures the rocker arm to the cylinder (1-2-4-3) sequence. After allowing engine to cool,
head (see Figure 19). Loosen the locknut to increase adjust #1 cylinder. After timing the #1 cylinder, adjust
clearance and tighten it to reduce clearance.
the valve clearance according to steps 2 and 3.
ROCKER
VALVE
SPRING
SEAT
SHORT
SLEEVE
DOWN
ONLY
FIGURE
20.
A'DJUSTING VALVES
FIGURE 19. VALvE MECHAI\W;M
2Z