GENERAL INFORMATION
1-45
Blue smoke
Blue smoke indicates that the engine is burning oil in the combustion chamber as it leaks past worn
valve stem seals and piston rings. Excessive oil consumption is another indicator of an engine that is
burning oil. Perform a compression test to isolate the problem.
White smoke or steam
It is normal to see white smoke or steam from the exhaust after first starting the engine in cold
weather. This is actually condensed steam formed by the engine during combustion. If the UTV is
ridden far enough, the water cannot collect in the crankcase and should not become a problem. Once
the engine heats up to normal operating temperature, the water evaporates and exits the engine
through the crankcase vent system. However, if the UTV is ridden for short trips or repeatedly started
and stopped and allowed to cool off without the engine getting warm enough, water will start to collect
in the crankcase. With each short run of the engine, more water collects. As this water mixes with the
oil in the crankcase, sludge is produced. Sludge can eventually cause engine damage as it circulates
through the lubrication system and blocks off oil passages.
Large amounts of steam can also be caused by a cracked cylinder head or cylinder block surface
that allows coolant to leak into the combustion chamber. Perform a Coolant System Pressure Test.
Low Engine Compression
Problems with the engine top end will affect engine performance. When the engine is suspect,
perform the leak down procedure in this chapter and make a compression test . Interpret the results as
described in each procedure to troubleshoot the suspect area. An engine can lose compression
through the following areas:
1. Valves:
a.
Incorrect valve adjustment.
b.
Incorrect valve timing.
c.
Worn or damaged valve seat surfaces.
d. Bent
valves.
e.
Weak or broken valve springs.
2. Cylinder
head:
a. Loose spark plug or damaged spark plug hole.
b. Damaged cylinder head gasket.
c. Warped or cracked cylinder head.
3. Damaged decompress or assembly.
High Engine Compression
1. Faulty decompress or assembly.
2. Excessive carbon buildup in the combustion chamber.
Содержание UTV 700 2009
Страница 1: ...HUANSONG UTV 700 SERVICE MANUAL 2009 ...
Страница 96: ...GENERAL SPECIFICATIONS 2 23 HYDROGRAPHIC CHART Hydrographic chart Pressure splash ...
Страница 97: ...GENERAL SPECIFICATIONS 2 24 LUBRICATION OIL WAY ...
Страница 111: ...3 14 Oil gallery bolt 7 Nm 0 7 m kg 5 1 ft lb 12 Install console passenger seat driver seat Refer to SEATS in chapter 5 ...
Страница 146: ...CYLINDER HEAD 4 5 No Name part Qty Remarks 13 Thermo switch 1 1 For installation reverse the removal procedure ...
Страница 205: ...MIDDLE GEAR 4 64 Order Job Part Qty Remarks 11 Middle driven shaft 1 For installation reverse the removal procedure ...
Страница 246: ...5 31 BRAKE SYSTEM No Part Name Qty Remarks 26 Caliper piston seal 1 27 Bleed screw 1 ...
Страница 323: ...ELECTRIC STARTING SYSTEM 6 11 ELECTRIC STARTING SYSTEM CIRCUIT DIAGRAM Switch C D I Relay Motor Battery ...
Страница 330: ...CHARGING SYSTEM 6 18 CHARGING SYSTEM CIRCUIT DIAGRAM Ignition coil C D I Magneto Rectifier ...
Страница 333: ...LIGHTING SYSTEM 6 21 LIGHTING SYSTEM CIRCUIT DIAGRAM Flash Relay switch Rectifier Battery Light ...
Страница 337: ...SIGNALING SYSTEM 6 25 SIGNALING SYSTEM CIRCUIT DIAGRAM Flash Relay switch Rectifier Battery Light ...
Страница 348: ...COOLING SYSTEM 6 36 COOLING SYSTEM CIRCUIT DIAGRAM Temperature control switch fan motor Battery Circuit breaker switch ...
Страница 352: ...2WD 4WD SELECTING SYSTEM 6 40 2WD 4WD SELECTING SYSTEM CIRCUIT DIAGRAM Transfer Switch Relay Battery Motor Indicator ...