Snapper 1650 Series User Manual

GOVERNOR ADJUSTMENT
The governor functions to maintain engine
speed under changing load conditions and
also acts as a speed limiting device. Gover¬
nors are set at the factory and further adjust¬
ment should not be required unless linkage
works loose or becomes disconnected. Read¬
justment should be made if engine surges
with changing load or if speed drops con¬
siderably when a normal load is applied.
SINGLE CYLINDER ENGINES
INITIAL ADJUSTMENT: With engine stopp¬
ed, loosen (do not remove) hex nut, securing
governor arm, to governor cross shaft. Grasp
end of cross shaft with pliers and turn shaft
as far as possible in counterclockwise direc¬
tion — tab on shaft will stop internally again¬
st governor gear mechanism. Hold shaft in
this position, pull governor arm all the way
away from carburetor then retighten gover¬
nor arm nut to complete initial adjustment.
FIG. 6.3-GOVERNOR ADJ-SINGLE CYL.
1. Governor Arm. 2. Cross Shaft. 3. Hex Nut.
4. Governor Control Bracket. 5. Governor Spring.
SPEED ADJUSTMENT : Maximum allowable
speed is 3600 rpm. This speed must not be
exceeded. If overspeed condition is suspect¬
ed, check rmp's with hand tachometer and
readjust as follows:
Adjust high speed stop screw, until correct
maximum speed is attained.
SENSITIVITY : If speed drops considerably
when a normal load is applied, governor
should be set for greater sensitivity. If set too
sensitive, speed surging will occur when
changing load. Governor sensitivity is adjust¬
ed by repositioning governor spring, in holes
provided on governor control bracket, and
FIG. 6.4-SPEED ADJUSTMENTS-SINGLE
1. High speed Bracket. 2. High Speed Stop Screw.
3. Throttle Control Cable. 4. Choke Cable.
speed bracket. Increase tension on spring
(and sensitivity) by moving spring hooks into
holes spaced further apart — conversely, de¬
crease sensitivity by reducing tension on
spring.
TWIN CYLINDER ENGINES
To adjust high speed setting (no load
governed speed): Position set screw on end
of throttle control bellcrank so that when
control lever on dash is in forward position
rearward arm of bellcrank is against stop of
fixed bracket. This should provide 3600 rpm
engine speed. If it does not bend stop pad to
achieve 3600 rpm. It may be necessary to re¬
position throttle control wire in set screw on
bellcrank.
FIG. 6.5-SPEED ADJUSTMENTS-TWO CYL
1. Throttle Control Cable. 2. Throttle Control Bellcrank.
3. High Speed Stop Pad. 4. High Speed Adjustment Screw.
f7
6.3

Snapper 1650 Series Specifications

General

Brand	Snapper
Model	1650 Series
Category	Lawn Mower
Language	English