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ENGINE SPEED ADJUSTMENTS
Normally there is no need to adjust engine speed.
These instructions are for the equipment manufac¬
turer in setting up and adjusting the equipment.
Engine speed adjustment must be attempted only
by a qualified mechanic and the adjustments must
be made using an accurate tachometer. Set the low-
idle and high-idle speeds to the values specified in
the equipment Operator's Manual. In the absence
of such specifications it is recommended that low-
idle speed be adjusted to 1100 RPM and high-idle
speed to 3400 RPM.
fAWARNiNGl
Adjusting the engine speed to a val¬
ue above that specified by the equipment
manufacture could cause the equipment to op¬
erate at speeds in violation of Federal and State
Standards for Safety for the equipment.
IAwarningI
Moving parts can cause severe per¬
sonal injury or death. Take care when measur¬
ing engine speed with a tachometer and follow
the meter instructions. You must be a qualified
mechanic.
Referring to Figure 7, adjust the low-idle and high-
idle engine speeds as follows:
1. Start the engine, observing all of the equipment
manufacturer's instructions and precautions.
2. If the throttle cable has already been con¬
nected, loosen the clamp at the engine and
back out the low-idle speed stop screw so that
the speed stop screw on the carburetor
touches its stop. Adjust engine speed to
1000 RPM with the carburetor speed stop
screw.
3. Turn the low-idle speed stop screw to obtain the
specified low-idle speed.
4. Move the engine throttle link up against its stop
tang and hold it there while bending the tang as
necessary to obtain the specified high-idle
speed.
5. Hook the engine throttle link with the throttle
cable, pull the slack out of the throttle cable and
tighten the clamp. Check for full, smooth move¬
ment of the engine throttle link between its two
stop positions when the equipment throttle le¬
ver is moved through its full range.
FIGURE 7. TYPICAL ARRANGEMENT OF PARTS
FOR SPEED ADJUSTMENTS
15
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