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46

Reassembly

KohlerEngines.com

18 690 01 Rev. F

Assemble Cylinder Head

NOTE:  Engine utilizes a valve stem seal on intake 

valve. Always use a new seal when valves are 

installed in cylinder head. Never reuse an old 

seal.

1.  Install valves into their respective positions.
2.  Install a new valve seal on stem of intake valve.
3.  Install valve springs and retainers into their 

respective locations in cylinder head. Using hand 

pressure, compress each valve spring and slide 

each retainer onto valve stem to lock in place.

Install Cylinder Head

1.  Check to make sure there are no nicks or burrs on 

sealing surfaces of cylinder head or crankcase.

2.  Rotate crankshaft to position piston at TDC on 

compression stroke.

3.  Install dowel pins into recesses around lower 

cylinder head bolt holes and install a new cylinder 

head gasket.

4.  Install cylinder head and start screws. Tighten 

screws initially to a torque of 12 N·m (106 in. lb.) in 

several increments using sequence shown. Tighten 

to a fi nal torque of 24 N·m (212 in. lb.).

Install Push Rods and Rocker Arms

NOTE:  Push rods should always be installed in original 

location.

1.  Install push rod guide plate, aligning holes for rocker 

arm studs. Install rocker arm studs and torque to 

13.6 N·m (120 in. lb.). 

2.  Dip ends of push rods in engine oil and install them 

in their respective locations, seating each into tappet 

socket.

3.  Assemble rocker arms, adjusters, and locknuts onto 

rocker arm studs and push rods.

4.  Adjust valve tappet clearance as follows:
 

a.  Be sure piston is still at top of compression 

stroke.

 

b.  Insert a fl at feeler gauge between rocker arm and 

valve stem. Recommended valve to rocker arm 

clearance for intake is 0.1 mm (0.0040 in.) and 

0.15 mm (0.0060 in.) for exhaust.

 

c.  Adjust clearance as required by loosening locknut 

and tightening adjuster.

 

  Turn clockwise to decrease clearance.

 

  Turn counterclockwise to increase clearance.

Cylinder Head Components

G

H

I

L

N

A

B

C

D

E

F

K

M

O

J

1

3

4

2

A

Valve Cover

B

Adjusting Nut

C

Rocker Arm

D

Rocker Arm Stud

E

Push Rod Guide

F

Push Rod

G

Valve Keeper

H

Valve Spring

I

Intake Valve Stem 

Seal

J

Cylinder Shroud

K

Valve

L

Spark Plug

M

Dowel Pins

N

Cylinder Head

O

Torque Sequence

8.  Connect kill wire to ignition module bottom blade terminal and route wire lead across top of crankcase.

Содержание Courage 3000 Series

Страница 1: ...stem 24 Governor System 25 Lubrication System 26 Electrical System 30 Starter System 33 Disassembly Inspection and Service 43 Reassembly IMPORTANT Read all safety precautions and instructions carefull...

Страница 2: ...death if inhaled WARNING Accidental Starts can cause severe injury or death Disconnect and ground spark plug lead s before servicing Before working on engine or equipment disable engine as follows 1...

Страница 3: ...Intake Every 100 Hours or Annually Clean low pro le air cleaner element Air Cleaner Intake Replace dual element air cleaner element Air Cleaner Intake Change oil Lubrication System Clean cooling areas...

Страница 4: ...ved and should NOT be used e ects of old stale or contaminated fuel are not warrantable Fuel must meet these requirements Clean fresh unleaded gasoline Octane rating of 87 R M 2 or higher Research Oct...

Страница 5: ...6H 15 00 0 591 SAE A FLANGE 4X 5 16 24 UNF 2B 15 00 0 591 162 00 6 378 342 20 13 473 65 05 2 561 32 53 1 281 66 00 2 598 32 53 1 281 65 05 2 561 318 66 12 545 STRAIGHT PTO 181 60 7 150 SPARK PLUG OIL...

Страница 6: ...manifold 8 N m 70 8 in lb Blower Housing and Sheet Metal M6 Shoulder Screw 10 N m 88 5 in lb M6 Nut 8 N m 70 8 in lb Carburetor Stud 10 N m 88 5 in lb Primary Nut 8 N m 70 8 in lb Secondary Nut 10 N...

Страница 7: ...Fastener 8 N m 70 8 in lb Module Screw 10 N m 88 5 in lb Oil Sentry Module Screw 8 N m 70 8 in lb Mu er M8 Exhaust Screw 24 N m 212 in lb M6 Mu er Shield Screw 8 N m 70 8 in lb M4 Mu er Shield Screw 2...

Страница 8: ...rankshaft End Play free 0 025 0 703 mm 0 0010 0 028 in Ball Bearing 0 003 0 25 mm 0 0001 0 0010 in Bore in crankcase New without Main Bearing 51 961 51 991 mm 2 0457 2 0469 in Bore in closure plate Ne...

Страница 9: ...Piston to Piston Pin Running Clearance 0 009 0 016 mm 0 0003 0 0006 in Piston Pin Bore I D New Max Wear Limit 18 004 18 005 mm 0 7088 0 7089 in 18 05 mm 0 7106 in Piston Pin O D New Max Wear Limit 17...

Страница 10: ...D New Max Wear Limit 5 480 mm 0 2157 in 5 32 mm 0 2094 in Exhaust Valve Stem O D New Max Wear Limit 5 47 mm 0 2153 in 5 305 mm 0 2088 in Intake Valve Stem to Guide New Max Wear Limit 0 024 0 039 mm 0...

Страница 11: ...English Fastener Torque Recommendations for Standard Applications Bolts Screws Nuts and Fasteners Assembled Into Cast Iron or Steel Grade 2 or 5 Fasteners Into Aluminum Size Grade 2 Grade 5 Grade 8 Ti...

Страница 12: ...mestic Complete kit of Kohler required tools Components of 25 761 39 S Ignition System Tester Cylinder Leakdown Tester Oil Pressure Test Kit Recti er Regulator Tester 120 V AC 60Hz Kohler 25 761 39 S...

Страница 13: ...enoid Shift SE Tools KLR 82411 SE Tools KLR 82416 Triad OHC Timing Tool Set For holding cam gears and crankshaft in timed position while installing timing belt Kohler 28 761 01 S Valve Guide Reamer K...

Страница 14: ...ng gear teeth Bosses will lock tool and ywheel in position for loosening tightening or removing with a puller A spanner wrench to lift rocker arms or turn crankshaft may be made out of an old junk con...

Страница 15: ...to check simple causes which at rst may seem too obvious to be considered For example a starting problem could be caused by an empty fuel tank Some general common causes of engine troubles are listed...

Страница 16: ...or indications of improper t and seal Check air cleaner element Look for holes tears cracked or damaged sealing surfaces or other damage that could allow un ltered air into engine A dirty or clogged...

Страница 17: ...Make sure pinch clamp is closed 2 Start engine and run no load high speed 3 Open clamp and note water level in tube Level in engine side should be a minimum of 10 2 cm 4 in above level in open side I...

Страница 18: ...ft Install a 3 8 in breaker bar into hole slot of holding tool so it is perpendicular to both holding tool and crankshaft PTO If ywheel end is more accessible use a breaker bar and socket on ywheel nu...

Страница 19: ...Element 1 Remove wing nut if equipped and paper element with precleaner 2 Separate precleaner from element service precleaner and replace element 3 Reinstall precleaner over paper element secure with...

Страница 20: ...tank to carburetor 1 Stop engine 2 Turn fuel shut o lever to OFF position 3 Remove fuel shut o cup 4 Clean fuel shut o cup with solvent and wipe dry 5 Inspect for worn or damaged O ring replace as nec...

Страница 21: ...rburetor 1 Make sure fuel tank is lled with clean fresh gasoline 2 Make sure fuel tank cap vent is not blocked and is operating properly 3 Make sure fuel is reaching carburetor This includes checking...

Страница 22: ...through slow air bleed jets fuel is drawn through main jet and further metered through slow jet Air and fuel are mixed in body of slow jet and exit to idle progression transfer port chamber From idle...

Страница 23: ...retor After main jet is removed main nozzles can be removed through bottom of main towers Note orientation direction of nozzles End with 2 raised shoulders should be out down adjacent to main jets 6 S...

Страница 24: ...lever clockwise until it stops 5 Rotate governor shaft clockwise until it stops 6 Hold both in this position and torque governor lever nut to 10 N m 88 5 in lb Governed speed setting is determined by...

Страница 25: ...OIL Change oil while engine is warm 1 Clean area around oil ll plug dipstick and drain plug 2 Remove drain plug and oil ll plug dipstick Drain oil completely 3 Reinstall drain plug Torque 18 N m 13 f...

Страница 26: ...e feeler gauge Adjust gap to 0 76 mm 0 030 in 2 Install plug into cylinder head 3 Torque plug to 27 N m 20 ft lb Inspection Inspect each spark plug as it is removed from cylinder head Deposits on tip...

Страница 27: ...erminal J Spark Plug Boot These engines are equipped with a dependable magneto breakerless ignition In such a system electrical energy is generated by cutting of magnetic ux lines generated from ignit...

Страница 28: ...test resistance from small spade terminal to core of spark plug lead wire If resistance is not in this range replace module Resistance Chart Ignition Module 13 5 18 0 K ohms Cap 4 6 K ohms Spade Termi...

Страница 29: ...connections Connect ohmmeter leads to switch leads and check for continuity in both switch positions Condition Conclusion Continuity should be indicated when and only when switch is in OFF position R...

Страница 30: ...ttery Check speci c gravity of battery If low recharge or replace battery as necessary Wiring Check for corroded connections poor ground connection Transmission or Engine Make sure clutch or transmiss...

Страница 31: ...ve it from starter for testing a Set an ohmmeter on Rx1 scale and zero meter Connect one ohmmeter lead to terminal of blue lead from relay Connect other ohmmeter lead to relay mounting bracket Conditi...

Страница 32: ...ley counterclockwise until rope hole in pulley is aligned with rope guide bushing of starter housing 9 Insert unknotted end of new rope through rope hole in starter pulley and rope guide bushing of ho...

Страница 33: ...ccidental Starts can cause severe injury or death Disconnect and ground spark plug lead s before servicing 18 690 01 Rev F KohlerEngines com External Engine Components D J E F G I C A H B K A Oil Drai...

Страница 34: ...mple time for oil to drain from crankcase Remove Mu er and Heat Shield Assembly 1 Remove nuts lock washers and at washers 2 Remove mu er assembly from exhaust outlet 3 Remove exhaust gasket from exhau...

Страница 35: ...arks from ignition Never use gasoline as a cleaning agent Remove air cleaner gasket and slide carburetor o mounting studs while disconnecting throttle linkage and dampening spring Remove carburetor to...

Страница 36: ...seal hold block of wood against 1 at surface of valve cover Strike wood rnly with mallet If seal doesn t break loose after 1 or 2 attempts repeat procedure on other side 1 Remove screws and remove va...

Страница 37: ...mm 2 4409 in 0 0059 in Valve Length Maximum 64 15 mm 2 5256 in 62 15 mm 2 4468 in Valve Length Service Limit 64 15 mm 2 5256 in 62 15 mm 2 4468 in D Face Seat Width Maximum 2 0 mm 0 079 in 2 0 mm 0 07...

Страница 38: ...d or distorted If cracked or badly warped cylinder head should be replaced Recondition valve seat inserts following instructions provided with valve seat cutter being used Cutting proper valve face an...

Страница 39: ...or Cross Shaft T Crankcase Bearing U Crankcase Oil Seal V Dowel Pin Remove Closure Plate NOTE Do not pry on gasket surface of crankcase or closure plate as this can cause damage and leakage 1 Remove s...

Страница 40: ...fuel is blown out opened exhaust valve and does not hamper starting 5 Engines with ACR start much faster in cold weather than engines without ACR 6 Engines with ACR can be started with spark plugs th...

Страница 41: ...to ring side clearance Compare clearance to Clearance Speci cations If side clearance is greater than speci ed a new piston must be used Measuring Piston to Bore Clearance Piston Detail A A 15 mm 0 59...

Страница 42: ...Oil Sentry System 1 Remove nut securing Oil Sentry lead wire grommet assembly to crankcase 2 Pull grommet assembly from crankcase on inside 3 Remove screws securing Oil Sentry oat switch to crankcase...

Страница 43: ...or press to make sure bearings are installed straight into their respective bore until fully seated 3 Using an appropriate seal driver install oil seal into closure plate to a depth of 5 5 mm 0 217 in...

Страница 44: ...ring assembly rst middle compression ring second and top compression ring last Oil control ring assembly is a three piece design and consists of a top rail expander ring and bottom rail 1 Install pist...

Страница 45: ...y is not installed properly 1 Install woodru key into keyway of crankshaft Be sure that key is properly seated and parallel with taper of shaft 2 Install ywheel onto crankshaft being careful not to sh...

Страница 46: ...ker Arms NOTE Push rods should always be installed in original location 1 Install push rod guide plate aligning holes for rocker arm studs Install rocker arm studs and torque to 13 6 N m 120 in lb 2 D...

Страница 47: ...l a new valve cover gasket followed by valve cover on head with screws and torque to 8 0 N m 71 in lb using sequence shown Valve Cover with RTV A A RTV Sealant NOTE Always use fresh sealant Using outd...

Страница 48: ...nk E Dampening Spring F Control Assembly G Carburetor H Retractable Starter I On O Wiring Harness Bullet Connector J Blower Housing K Oil Sentry Wiring Harness Bullet Connector L Oil Sentry Module M O...

Страница 49: ...rope handle to engage pawls and center starter to drive cup Hold in this position and torque screws to 5 4 N m 47 8 in lb External Engine Components D J E F G I C A H B K A Oil Drain Plug B Oil Fill P...

Страница 50: ...e lever to throttle plate Install tabbed washer with tab engaged in slot and secure with nut 3 Torque nut to 5 4 N m 47 8 in lb 4 Install governor lever onto shaft 5 Connect dampening spring and throt...

Страница 51: ...8 Spring Color Hole Spring Color Hole Spring Color Hole Spring Color Hole Spring Color Hole Spring Color Hole Spring Color Hole 3750 3950 None B 3100 3300 Gold C 3500 3700 Green A 3750 3950 Green B 36...

Страница 52: ...cleaner onto air cleaner stud and secure with washer and wing nut if equipped 3 Install air cleaner cover and secure with wing nut Low Pro le 1 Install air cleaner base and secure with screws 2 Instal...

Страница 53: ...53 18 690 01 Rev F KohlerEngines com...

Страница 54: ...54 KohlerEngines com 18 690 01 Rev F...

Страница 55: ...55 18 690 01 Rev F KohlerEngines com...

Страница 56: ...56 KohlerEngines com 18 690 01 Rev F 2019 by Kohler Co All rights reserved...

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