Subaru-robin EX13 User Manual Page 72
- Page / 113
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
Rated. / 5. Based on customer reviews
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69
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Problem and possible cause Remedy
1. Insufficient compression 1) Loosen spark plug Retighten; replace gasket
2) Leakage from cylinder head gasket Retighten; replace gasket
3) Piston ring seizure or wear Replace
4) Piston or cylinder wear Repair or replace
5) Incorrect valve and seat contact Repair or replace
6) Valve stem seizure Repair or replace
7) Improper valve clearance Adjust
2. Ignition system problems
1) Faulty spark plug Replace
2) Faulty ignition coil Replace
3) Improper air gap between ignition coil and
flywheel
Adjust
4) Demagnetization (flywheel magneto) Replace
3. Fuel system malfunction
1) Carburetor clogged Overhaul, clean
2) Fuel strainer and/or hose clogged Clean or replace
3) Air in fuel lines Check and retighten joints
4) Poor quality gasoline or water in gasoline Replace
4. Low air intake volume
1) Air cleaner clogged Clean or replace
2) Throttle valve malfunction Repair or replace
1. Engine 1) Cooling air flow obstructed at inlet or cylinder
baffle portion
Clean
2) Poor quality engine oil Replace
3) Lean fuel/air mixture
Check and adjust
carburetor
4) Excessive back pressure of exhaust system Check and clean or replace
5) Overloading Adjust to rated load
1. Carburetor system
1) Low idling speed Adjust
2) Slow system passage clogged Check and clean
2. Intake system
1) Air mixing from air intake system joints
Check and tighten;
replace gasket
3. Cylinder head
1) Gasket faulty (blow-by) Replace
4. Valve system
1) Improper valve clearance Adjust
2) Leakage from valve seat Repair
3) Excessive clearance between valve stem and
guide
Replace
5. Ignition system
1) Weak spark
Check; adjust or replace
plug
Poor output
OverheatRough Idling
- EX13,17,21,27 1
- SP170,SP210 1
- Robin America, Inc 2
- CONTENTS 3
- 1. SPECIFICATIONS 4
- 2. PERFORMANCE 5
- 2-4 PERFORMANCE CURVES 6
- 3. FEATURES 10
- Fig. 4-1 11
- Fig. 4-2 11
- Fig. 4-3 11
- Fig. 4-4 11
- 4-5 PISTON RINGS 12
- 4-7 VALVE ARRANGEMENT 12
- 4-8 CYLINDER HEAD 12
- 4-6 CAMSHAFT 12
- 4-13 IGNITION SYSTEM 13
- 4-11 LUBRICATION SYSTEM 13
- 4-10 COOLING SYSTEM 13
- 4-9 GOVERNOR SYSTEM 13
- 4-12 TIMING CHAIN 13
- Fig.4-12 14
- Fig.4-13 14
- Fig.4-14 14
- Fig.4-15 14
- Fig. 4-16 15
- Fig. 4-17 16
- Fig. 5-1 17
- Fig. 5-2 18
- Fig. 5-3 19
- Fig. 5-4 20
- FUEL PIPE 21
- Fig. 5-9 23
- Fig. 5-10 Fig. 5-11 23
- Fig. 5-8 24
- Fig.5-12 25
- Fig. 5-14a 26
- Fig. 5-13 26
- Fig. 5-14b 26
- Fig. 5-17 28
- Fig.5-19 28
- Fig.5-18b 28
- Fig.5-18a 28
- Fig.5-20 29
- Fig.5-21 29
- Fig.5-22 30
- Fig.5-23 31
- Fig.5-24 31
- Fig.5-25 31
- Fig.5-29 32
- Fig.5-30 32
- Fig.5-31 33
- Fig.5-33 33
- Fig.5-32 33
- Fig. 5-34 34
- Fig.5-35 34
- Fig.5-36 34
- Fig. 5-37 35
- Fig. 5-38a 35
- Fig.5-38b 35
- Model EX21 36
- Models EX13, 17 and 36
- 27 mounting positions 36
- Fig. 5-41a 37
- (11) MOUNTING THE TENSIONER 38
- Fig. 5-44 39
- Fig. 5-43 39
- TIMING MARK 39
- BALANCER GEAR 39
- CRANKSHAFT GEAR 39
- Intake valve side 40
- Exhaust valve side 40
- Electrode gap 0.6 mm - 0.7 mm 41
- Tightening torque 42
- 7.0 - 9.0 N・m 42
- (70 - 90 kgf・cm) 42
- (5.1 - 6.5 ft・lb.) 42
- Fig. 5-54 43
- Fig. 5-55 44
- Fig. 5-58 45
- Fig. 5-57 45
- Fig. 5-59a 46
- Fig. 5-59b 46
- Fig. 5-60 47
- Fig. 5-59c 47
- Fig. 5-62 48
- Fig. 5-61 48
- 6. ENGINE OIL 50
- 7. MAGNETO 51
- Fig. 7-1(a) 52
- Fig. 7-1(b) 52
- 7-4 IGNITION SYSTEM (EX27) 53
- Fig. 8-2 54
- Fig. 8-1 54
- Fig. 8-3 55
- Fig. 8-4 55
- ※ Oil sensor as option 55
- 9. ELECTRIC STARTER 56
- 9-3 COMPONENT PARTS 57
- (Models EX17 and EX21) 57
- (Model EX27) 57
- Fig.10-1 58
- Fig.10-2 58
- Fig.10-3 58
- Fig. 11-2 59
- Fig. 11-1 59
- 12. CARBURETOR 60
- Fig. 12-2 61
- Fig. 12-1 61
- Fig. 12-3 62
- Fig. 13-1 64
- Fig. 13-2 65
- Fig. 13-4 65
- Fig. 13-3 65
- Fig. 13-5 66
- Fig. 13-6 66
- Fig. 13-7 66
- Fig. 13-8 67
- Fig. 13-9 67
- Fig. 13-11 68
- Fig. 13-10 68
- 14. INSTALLATION 69
- 14-5-1 BELT DRIVE 70
- 14-5-2 FLEXIBLE COUPLING 70
- 15. TROUBLESHOOTING 71
- Poor output 72
- OverheatRough Idling 72
- LECTRIC STARTER 74
- KEY SWITCH 75
- RING GEAR 76
- PINION GEA 76
- 16. STANDARD REPAIR TABLES 77
- Unit: mm (in.) 78
- 16-2 TIGHTENING TORQUE 83
- 17. MAINTENANCE AND STORAGE 84
- 17-8 ENGINE STORAGE 85
- SERVICE INFORMATION 87
- 2. DESCRIPTION OF FUEL SYSTEM 91
- 3. DISASSEMBLY AND REASSEMBLY 92
- 4. WIRING DIAGRAM 97
- 5. THROTTLE BODY 98
- PULSING PRESSURE 99
- 6. INSTALLATION 101
- 7. TROUBLESHOOTING 102
- ENGINE WILL NOT START 105
- Engine does not start 105
- 8. MAINTENANCE AND STORAGE 106
- 9. ORGANIZE 108
- PRINTED IN THE USA 113
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