WM, Workshop Manual, K650, K700, K950, K1250, 2001-06, Power ...

More documents

Recommendations

Info

Cylinder and piston 5 The guide pin for the piston ring has been pressed up through the piston head. Deep and irregular grooves caused by a loose circlip. Here on the piston's inlet side. Irregular grooves on the piston's inlet side caused by a broken bearing cage. Loose vibrated guide pin for piston ring Excessively high engine revs can result in the piston ring ends hammering against the guide pin when the piston ring moves in its groove. The intensive hammering can drive out the pin through the head part of the piston and also result in serious damage to the cylinder. Damage on circlips for the piston bolt Excessively high engine revs can cause the circlips for the piston bolt to vibrate. The vibrations cause the circlip grooves to wear out, which in turn results in a reduction of the tensioning of circlips. The circlips can therefore loosen and cause damage to the piston. Bearing malfunction Malfunctioning of the crank shaft or connecting rod bearings is usually the result of excessively high engine revs, which result in overloading or overheating of the bearing. This in turn can imply that the bearing needles or balls slip instead of rotating, which can result in the bearing cage breaking up. The broken parts can become jammed between the piston and the cylinder wall and result in damage to the piston skirt. Damaged parts can also pass up through the cylinder’s transfer ports and result in damage to the piston sides and head, and the cylinder’s combustion chamber. Foreign objects Everything that enters the engine through the inlet port, apart from clean air and clean fuel, results in some form of irregular wear or damage to the piston and cylinder. This type of increased wear can be noticed on the piston’s inlet side, beginning at the lower edge on the piston skirt. The wear is caused by poorly filtered air which passes through the carburettor and into the engine. Small scratches and a dull, grey surface on the piston's inlet side resulting from fine dust particles. 53
5 Cylinder and piston Reasons: ● Defective air filter. Small dust particles pass through the filter. ● The filter is worn out as a result of overcleaning, whereby small holes have been made in the filter material. ● Insufficient maintenance of the filter, e.g. the use of incorrect method or incorrect solvent. ● Flocculation material releases and holes are made in the air filter. ● The air filter is incorrectly fitted. ● The air filter is damaged or missing. Procedure: Fit a fine-mesh filter. Check the filter carefully for holes and damage each time it is cleaned. Change the filter if necessary. Carefully clean and use the correct solvent (e.g. lukewarm soapy water). Change filter. Fit the filter correctly. Fit a new air filter. Inlet side. Dust and dirt particles from carbon deposits on the head of the piston and in the piston ring groove. The piston ring is stuck in the groove. Piston material is worn off. The lower part of the piston skirt on the inlet side is thinner than on the exhaust side. Large, softer particles which have entered the engine result in damage to the piston skirt under the piston ring as shown in the illustration. Reasons: ● The air filter is incorrectly fitted. ● The air filter is damaged or missing. Procedure: Fit the air filter correctly. Fit a new air filter. The piston is worn and scratched from the piston ring and downwards on the inlet side. Large, hard particles which enter the engine result in more severe damage to the lower part of the piston skirt. Reasons: ● The air filter is damaged or missing. ● Parts from the carburettor or inlet system have released and entered the engine. Procedure: Fit a new air filter. Regular service and control. Severe damages to the lower part of the piston on the inlet side. 54
Page 1 and 2:
PARTNER Workshop Manual R
Page 3 and 4: General recommendations Keep this i
Page 5 and 6: 1 Starter unit ! WARNING! When work
Page 7 and 8: 1 Starter unit Anchor the starter r
Page 9 and 10: 1 Starter unit Assembly Mod. 650, 7
Page 11 and 12: 1 Anchor the starter cord in the st
Page 13 and 14: 2 Ignition system The engine is fit
Page 15 and 16: 2 Ignition system Check the ignitio
Page 17 and 18: 2 Ignition system Fit piston stop N
Page 19 and 20: 2 Ignition system Fit the ignition
Page 21 and 22: 3 Fuel system In addition to the fu
Page 23 and 24: 15 10 5 20 0 100 50 0 150 30 200 25
Page 25 and 26: 3 Fuel system A Dismantle the screw
Page 27 and 28: 3 Fuel system Speed limiter Mod. 65
Page 29 and 30: 3 Fuel system In the event of leaka
Page 31 and 32: 3 Fuel system Assembly of the carbu
Page 33 and 34: 3 Fuel system Walbro WG 9 A C B Mod
Page 35 and 36: 3 Fuel system Fine adjustment of th
Page 37 and 38: 3 Fuel system Lift off the half of
Page 39 and 40: 3 Fuel system Mod. 1250 Separate th
Page 41 and 42: 3 Fuel system Trouble-shooting char
Page 43 and 44: 4 Centrifugal clutch The centrifuga
Page 45 and 46: 4 Centrifugal clutch Mod. 950, 1250
Page 47 and 48: 4 Centrifugal clutch The clutch dru
Page 49 and 50: 5 Cylinder and piston The cylinder
Page 51 and 52: 5 Cylinder and piston Unscrew the c
Page 53: 5 Cylinder and piston Piston seizur
Page 57 and 58: 5 Cylinder and piston Fit a new cyl
Page 59 and 60: 5 Cylinder and piston Check that th
Page 61 and 62: 6 Crankshaft and crankcase The purp
Page 63 and 64: 6 Crankshaft and crankcase Mod. 950
Page 65 and 66: 6 Crankshaft and crankcase Remove t
Page 67 and 68: 6 Crankshaft and crankcase Mod. 125
Page 69 and 70: 6 Crankshaft and crankcase Heat up
Page 71 and 72: 6 Crankshaft and crankcase M5 x 20
Page 73 and 74: 6 Crankshaft and crankcase Check th
Page 75 and 76: 6 Model 950 - Crankcase lubrication
Page 78 and 79: Cutting equipment 7. Contents Disma
Page 80 and 81: Cutting equipment 7 Release the bel
Page 82 and 83: Cutting equipment 7 D E F Turn the
Page 84 and 85: Cutting equipment 7 B A Lift the cu
Page 86 and 87: Tools 8. Contents Clutch ..........
Page 88 and 89: Tools 8 Sealing ring Model 505 38 1
Page 90 and 91: 15 10 5 100 50 0 150 30 200 250 300
Page 92 and 93: Tools 8 Workshop equipment Model 3
Page 94 and 95: Technical data 9. Contents Technica
Page 96: 108 07 07-47 SEK 95:- Teknik-Info A
show all

WM, Workshop Manual, K650, K700, K950, K1250, 2001-06, Power ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?