valutazioni - 3, GPA: 3
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00 No spark at plug Covered with carbon ..................................... Clean or replace. Fouled with fuel ............................................ Clean or replace. Starting procedures incorrect ....................... Start correctly. Low and high speed needle ........................... Readjust. setting too lean Metering lever spring too strong .................... Readjust. Fuel does not keep running 000 Fuel pump diaphragm defective .................... Replace. Fuel passage clogged with dust .................... Disassemble and clean. correct Acceleration and low speed function defective 0 0 0 Fuel leaking from fixing surfaces .................. Retighten all screws. of carburetor Air valve, fuel tank cap does not work normally ............................................... Replace or Clean. Fuel pump does not operate .......................... Check impulse drilling. Carburetor overflow 0 0 0 Fuel inlet needle valve clogged with dust ....... Clean. Metering lever spring not placed in dent of lever .............................................. Correct. Muffler sticky with fuel .................................. Fuel mixture is too rich Start the engine several times with choke rod fully open and run at fast idle until engine does not smoke. Engine does not crank 0 0 0 0 0 Bearing damaged ......................................... Disassemble and replace. Piston and/or cylinder seized ........................ Disassemble and replace. Crankshaft worn .......................................... Disassemble and replace. Crankshaft contacting crankcase .................. Disassemble and replace. 20 Table 2 Engine keeps running, but chain does not cut clean Output (engine speed) sufficient Ouput (engine speed) insufficient Engine overheated Firing function defective Carburetor defective Other troubles Chain does not cut clean Chain stops (Clutch slips) Chain poorly lubricated Improper fuel used ........................................ Use fuel with correct mixing ratio. Never use gasoline of poor quality. Spark plug defective (worn) .......................... Replace. As cooling fins clogged, air does not pass well ........................................ Clean fins. Excessive deposits in combustion chamber ..................................... Disassemble and remove carbon. Plug damaged or fouled ................................ Replace or clean. Comubstion poor due to defective wiring ............................................ Check wiring. High-speed needle setting incorrect ............. Readjust. Carburetor overflow ...................................... Refer to Table 1. Air cleaner clogged ..................................... Clean as necessary. Compression insufficient (piston ring stuck or worn out) ...................... Disassemble, check and replace if necessary. Cylinder chromium plating peeled ................ Replace cylinder or worn out Exhaust port clogged with carbon ................. Clean as necessary. Throttle is not fully open ................................ Readjust. Chain tension incorrect ................................ Adjust. Chain wrongly set ........................................ Set correctly. Depth incorrect ............................................ Readjust. Chain saw pressed against tree to firmly ................................................. Press lightly. Clutch shoe worn out .................................... Replace. No oil in tank ................................................ Refill. Oil delivery incorrect .................................... Adjust. Oil contaminated with dust ........................... Rinse tank and fill with new oil.. Oil viscosity inappropriate ............................ Use oil with correct viscosity for summer or winter. STORAGE AFTER USE • Inspect and adjust every part of the chain saw. - Completely clean every part, and repair, if necessary. -Apply thin coating of oil on metal parts to prevent rust. - Remove chain and guide bar, apply sufficient oil coating and wrap them up in plastic. • Drain fuel tank, pull starter slowly a few times to drain fuel from carburetor. • Pour a small amount of clean two-stroke oil into spark plug hole, pull starter and crank engine until the piston is at TOP DEAD CENTER. • Store in a dry area, free from dust. 21 CORRECT USE OF CHAIN BRAKE The installation of a chain brake may be mandatory by law or as stipulated by insurance regulations in your area of operation. You should inquire through local government offices, your employer or your local dealer to ensure that your chain saw conforms to the required safety standard. Echo chain brakes have been designed and tested to comply with international safety standards as follows. USA: ANSI Standard B175.1-2000 Safety Requirement for chain saws Canada: CSA Standard Z 62.1 CHAIN SAWS WARNING : • ANSI Standard B175.1-2000 stipulates that the brake shall stop the chain in 0.10 seconds (one tenth) at an engine speed of 8000 RPM. It is the resp...