Engine Service Manual

92
Reassembly
KohlerEngines.com 32 690 03 Rev. I
Install Fuel Pump
WARNING
Explosive Fuel can cause fi res and severe
burns.
Do not fi ll fuel tank while engine is hot or
running.
Gasoline is extremely fl ammable and its vapors can
explode if ignited. Store gasoline only in approved
containers, in well ventilated, unoccupied buildings,
away from sparks or fl ames. Spilled fuel could ignite
if it comes in contact with hot parts or sparks from
ignition. Never use gasoline as a cleaning agent.
Fuel Pump Components
A
F
B
C
D
E
A Outlet Fuel Line B Pulse Hose
C Inlet Fuel Line D Fuel Line Clamp
E Fuel Filter F Fuel Pump
NOTE: If a new fuel pump is being installed, make sure
orientation of new pump is consistent with
removed pump. Internal damage may occur if
installed incorrectly.
1. Connect pulse hose to valve cover. Valve cover
should be situated between 2 formed lips on pulse
hose.
2. Attach pulse hose to fuel pump and secure with a
clamp. Mount fuel pump to blower housing with
screws. Torque screws to 2.8 N·m (25 in. lb.).
3. Connect inlet and outlet fuel lines to pump. Route
inlet fuel line through fuel line clamp (if used) as
shown.
Install Muffl er
1. Install muffl er and attaching hardware to muffl er
bracket. Torque screws to 9.9 N·m (88 in. lb.).
2. Install M8 nuts or 5/16-18 head capscrews (based
on head design), to secure muffl er. Torque nuts to
24.4 N·m (216 in. lb.), or capscrews to 16.9 N·m
(150 in. lb.).
Install Oil Filter and Fill Crankcase with Oil
NOTE: Make sure oil drain plug is installed and torqued
to specifi cation to prevent oil leakage.
1. Install oil drain plug. Torque plug to 13.6 N·m
(10 ft. lb.).
2. Place new fi lter in shallow pan with open end up. Fill
with new oil until oil reaches bottom of threads. Allow
2 minutes for oil to be absorbed by fi lter material.
3. Apply a thin fi lm of clean oil to rubber gasket on new
fi lter.
4. Refer to instructions on oil fi lter for proper
installation.
5. Fill crankcase with new oil. Level should be at top of
indicator on dipstick.
6. Reinstall oil fi ll/dipstick and tighten securely.
Connect Spark Plug Leads
Connect leads to spark plugs.
Prepare Engine for Operation
Engine is now completely reassembled. Before starting
or operating engine, be sure to do following.
1. Make sure all hardware is tightened securely.
2. Make sure oil drain plug, Oil Sentry
TM
pressure
switch, and a new oil fi lter are installed.
3. Adjust carburetor idle speed adjusting screw as
necessary.
Testing Engine
It is recommended engine be operated on a stand or
bench prior to installation in piece of equipment.
1. Run engine at idle for 2-3 minutes, then 5-6 minutes
more between idle and midrange.
2. Adjust idle speed screw and high-speed stop as
necessary. Make sure maximum engine speed does
not exceed 3750 RPM (no load).