Installation Instructions

Installation Instructions
11
Test System
1. Reconnect the spark plug leads. Check the
engine oil level.
2. Perform the final carburetor adjustments as
follows.
Note: The new carburetor installed is a ”fixed
jet, emissions certified” carburetor
designed to deliver the correct
fuel–to–air mixture to the engine under
all operating conditions. The fuel
mixtures are set at the factory and
cannot be adjusted.
m–4540
1
Figure 17
1. Low Idle Speed Adjusting
Screw
3. Start the engine and check to be certain that oil
pressure (20 psi or more) is present. Run the
engine for 5–10 minutes to warm up. The engine
must be warm before making final settings.
4. Place the throttle control into the ”idle” or
”slow” position. Turn the low idle speed
adjusting screw in or out, to obtain a low idle
speed of 1400 RPM (±75 RPM). Check the
speed using a tachometer (Fig. 17).
5. Move the throttle control to the
”Fast/Full–Throttle” position. Using a
tachometer, check that the maximum engine
speed does not exceed 3250 RPM (±50 RPM).
Adjust if necessary.
Installing Filter Guard
1. Hold guard up to the bumper so the bottom edge
of hole in guard lines up with the bottom edge of
bumper (Fig. 18). Clamp to bumper.
2. Using the guard as a template, drill three 11/32I
holes into bumper (Fig. 18).
3. Install two 5/16” screws into outside holes (Fig.
18). Do not install bolt in center hole until guard
plate is installed.
4. Install the guard plate using a 5/16” bolt in the
center top hole and carriage bolt and wing nut in
the bottom hole (Fig. 18).
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4
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6
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7
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Figure 18
1. Align Bottom Edges
2. 1 1/32” Holes to drill
3. Guard
4. Bolt
5. Nut
6.
Carriage Bolt
7. Guard Plate
8. Wing Nut