Troubleshooting - Echo CS-451VL Instruction Manual

11. TROUBLE SHOOTING
When you have found any trouble with your chainsaw, investigate the
cause with the help of the tables below, and disassemble the component in
trouble to 6x it.
When disassembling, refer to the Part List.
i
D., I
_--Bearing damaged ........................ DL_assemble and replace it.
•Engine doee ._Piston and cylinder burnt ........... Disassemble and _eplace them,
not crank I---Crankshafk worn ......................... DLsassembl© and _ep]ace it.
t-- Crank.shaft contacting
crankcase .................. Disas_mble and replacg it.
-Fuel is not
re_hlng -- Fuel pipe clogged ....................... Clean it.
garburetor
-Fuel is .or i---- Suction insufficient .................... Make it suf_ient_
teaching _Strainer dogged .......................... Rinse it.
cylinder t----Carburetor out of order .............. Disassemble _nd check it.
_Point in bad rStained with oil or water ............ Clean it with paper or cloth.
¢m _ " " L •
_-'_ o .__ condmon Point oxidize_l o_ b_lrnt .............. R_no_e rust with sa_ldpaper.
_o "_ ] p--Condenser defective .................. I_.vrnov¢ and replace it.
I;" o _ _Po_nt m ]"--coil defective ................. Remove and revlgee g.
_. -- good ............ --
o _'._a condilJon _wife COrIReC_On defective ........... Reconnect it.
--_- _a'_ / L"*High-tension co,d .................. I(ccolm_ct _t.
m l connection deeeetlve
-_ / S_ateh is open .......................... Switch on.
._. _.ngulator cracked ....................... Replace plu&
[ f---_No spark _Spcwk gap i_orr¢¢t ................... Adjust it,
| _" _ atplug ]-- Covercd with carbon ............ ;..... Removeit with hrush.
_. _ L--Too mmst
.................................
Replace
xt.
|_ _" ! Starth_g procedures incorrect ...... Start correctly.
_ -4 ,---Slow and main no_ --.. .
_ _. r---Fuel does.i-- _leedle valve lever spring ....
,m L _ii ru'mng E F_el pump diaphragta de fi:_ ti'_'' R_plac _ it_
¢l_el eP_ss_g i_ui_rburctor ........... Disassemble and replace it.
_ r--Fuel leaking from f_ing Reti_ten
k'b_A_celera- ]surfa¢es of carburetor ............. _" "
ltiomt_ndcd'_--Fuel t.ank air valve does not Re lace it
ftlttc_n L not w_rk normally ........ P "
I defective Fuel pump does not operate, Sto leak e
_ e_e pres.._li-_ t:or_et; OUt ...... P ag '
i--Fue_ inlet needle valve CLean it
L___Ca_bu_¢l_r|clogged with dust .................
ov©rflow t--Diaphragm lever spring not r'orrect it
placed in dent of lever ............
This is because fuel is too heavy.
Exhaust pipe sticky with fuel ..... Start the engine several times
with chocke lever fiflly open.
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