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Engine TRE 0701-TRE 0702-TRE 0801
Service manual
8. GOVERNOR SYSTEM OF THE CARBURETTOR ................................................. 25
8.1. Adjusting of accelerator cable ............................................................................................................25
8.2. Verify petrol pump (if present) .............................................................................................................. 26
8.3. Pump replacement (if present) .............................................................................................................26
8.4. Adjusting maximum speed ...................................................................................................................26
8.5. Replacing the lever support .................................................................................................................. 28
9. IGNITION ......................................................................................................... 30
9.1. Checkingtheefciencyoftheignitionsystem ..................................................................................30
9.2. Adjusting the air gap and checking the coil ......................................................................................31
9.3. Replacing the coil ..................................................................................................................................32
10. ENGINE BLOCK - External repairs ............................................................... 33
10.1. Checking the compression ................................................................................................................... 33
10.2. Adjusting the valve clearance .............................................................................................................34
10.3. Dismantling and cleaning the cylinder head .....................................................................................35
10.4 Overhauling the cylinder head and valves ........................................................................................36
10.5.Dismantlingandreplacingthemagnetoywheel .............................................................................39
10.6. Checking the oil breather .....................................................................................................................40
10.7.Replacingtheuppercompressionringoftheengineshaft(ywheelside) ....................................41
10.8. Verify alternator charge ........................................................................................................................41
10.9.Replacingthelowercompressionringoftheengineshaft(sumpside) .......................................... 42
11. ENGINE BLOCK - Overhauling internal parts ............................................. 43
11.1. Remove the engine from the machine ................................................................................................43
11.2. Carter opening .......................................................................................................................................43
11.3.Dismantlingandcheckingthecamshaftandcounterweightgovernor .......................................... 44
11.4. Dismantling and checking the piston, piston rings, connecting rod and engine shaft ..................47
12. TURNING OFF AND STOPPING ENGINE ....................................................... 53
13. EXHAUST SYSTEM .......................................................................................... 53
14. TROUBLESHOOTING ...................................................................................... 54
CONTENTS