Reassembly 3. Install breather reed and breather reed retainer onto crankcase and secure with screw. Hold assembly in line when tightening. Torque screw to 3.9 N·m (35 in. lb.). 4. Install breather fi lter into cavity in crankcase. 5. Carefully install breather cover gasket and breather cover onto crankcase. 6. Install and torque four breather cover screws to 7.3 N·m (65 in. lb.) in sequence shown. 7. Install pipe plug or Oil Sentry switch (as equipped), into tapped breather port if removed earlier. Apply pipe sealant with Tefl on ® (Loctite ® 592™ or equivalent) to threads. Torque to 4.5 N·m (40 in. lb.). If Oil Sentry switch is mounted to side of crankcase, torque switch to 12.4 N·m (110 in.
lb.). 8. If vacuum fi tting was removed from crankcase (vacuum fuel pump), apply pipe sealant with Tefl on ® (Loctite ® 592™ or equivalent) to threads of fi tting and install. With crankcase upright, fi tting must point to 1:30 position. 5. Connect upper end of breather hose to fi tting on rear of adapter. 6. Connect long end of choke linkage to carburetor. 7. If a mechanical fuel pump is used, install fuel line between outlet of fuel pump and carburetor inlet, and secure with clamps. Install External Governor Controls and Main Control Bracket Control Panel Details Reinstall Coolant Drain Plugs Coolant Drain Plug Details 1. Install governor lever onto governor cross shaft.
If separated, connect throttle link to governor lever with plastic bushing. Hook dampening spring into small (middle) hole. 2. Move governor lever TOWARDS carburetor as far as it will go (wide open throttle) and hold in this position. 3. Insert a nail into hole in cross shaft and rotate shaft COUNTERCLOCKWISE as far as it will turn. Then torque nut to 6.8 N·m (60 in. lb.). 4. Connect choke lever of main control bracket to choke linkage from carburetor. Mount main control bracket to cylinder heads with four screws. Torque screws to 10.7 N·m (95 in. lb.) into new holes, or 7.3 N·m (65 in. lb.) into used holes. 5. Connect dampening spring to throttle lever.
Hook governor spring from throttle control bracket in appropriate governor lever hole, as indicated in chart below. Note that hole positions are counted from pivot point of governor lever. Reinstall brass coolant drain plugs in sides of crankcase, (and also cylinder head plugs, if removed during head servicing). Apply pipe sealant with Tefl on® (Loctite ® 592™ or equivalent) to threads and reinstall plugs. Torque plugs to 36.7 N·m (325 in. lb.). Install Carburetor and Adapter 1. If separated, install breather tube to breather cover. 2. Install carburetor gasket on intake manifold. 3.
Attach longer ends of throttle linkage and spring to carburetor (if disconnected previously), then install carburetor onto intake manifold. Install and torque mounting screws to 6.2-7.3 N·m (55-65 in. lb.). 4. If adapter was separated from carburetor, install a new gasket and mount adapter with breather hose connection port facing rear. Install and torque mounting screws to 7.3 N·m (65 in. lb.). Install Lower Crankshaft Pulley, Pulley Adapter, and Cooling Fan Assembly NOTE: Do not assemble lower pulley with belt between pulley halves, as pinching of belt or damage to pulley can occur. 66 690 01 Rev.
C KohlerEngines.com 69 A B E C D A Control Panel B Choke Lever C Governor Lever Nut D Governor Lever E Governor Spring A A A Coolant Drain Plug