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Please note that your serial number could be located on the outside frame of your unit.  On the dataplate, there should be your model number, serial number, and possibly even a date of manufacture needed in order to match up the correct parts diagram for your unit accurately.

Here are some examples of your serial number location:

Here is an example of where you can find your corresponding Efco Power serial number to enter for correct parts matching.

Serial Number Product Location Finder

Efco MT-3500-S

Efco MT-3600

Efco MT-3700

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d45d289dd0dd605f430de064d1bdce6e9644cd4a_MT_3500_IPL_0.pdf

2e770dbe64b84512e2c1d5b22e16dd8a96266ecb_EFC_3960115R.jpg

68787bb00c5549eb77a49c2f8ea7ce193da347f4_EFC_50050073R.jpg

893fd239c4791e16edfdca6f861f37ab30bff21b_Illustration_Clutch_and_brake_2.jpg

b3fe452fde689f0b8078a20435d2e6ce1a1f0ede_Illustration_Crankcase_2.jpg

f600a13ee839f1712bbe6f7a3d25f6a91235b0a5_Illustration_Handle_and_air_filter.jpg

8346a09d46968a090188f4a770da6bf768feee0b_Illustration_Motor_6.jpg

073bfd44498c07b6776076a6b63f0125e30913cd_Illustration_Starter_assy_4.jpg

EFCO 132S ChainSaw

EFCO 147 ChainSaw

EFCO 152 ChainSaw

EFCO 156 ChainSaw

EFCO 165 ChainSaw

EFCO 181 ChainSaw

EFCO 264/ 264 Delux/264F Chain Saw

EFCO 931 ChainSaw

EFCO 932 ChainSaw

EFCO 932C ChainSaw

EFCO 935DX ChainSaw

EFCO 940 ChainSaw

EFCO 941 ChainSaw

EFCO 942 ChainSaw

EFCO 946 ChainSaw

EFCO 947 ChainSaw

EFCO 951 ChainSaw

EFCO 952 ChainSaw

EFCO 956 ChainSaw

EFCO 962 ChainSaw

EFCO 970 ChainSaw

EFCO 971 ChainSaw

EFCO 980 ChainSaw

EFCO 981 ChainSaw

EFCO 999/ 999-F ChainSaw

EFCO MT-3500 ChainSaw

EFCO MT-3500-S ChainSaw

EFCO MT-3600 ChainSaw

EFCO MT-3700 ChainSaw

EFCO MT-3750 ChainSaw

EFCO MT-4000 ChainSaw

EFCO MT-4100-SP ChainSaw

EFCO MT-4400 ChainSaw

EFCO MT-5200 ChainSaw

EFCO MT-6500 ChainSaw

EFCO MT-7200 ChainSaw

EFCO MT-8200 ChainSaw

EFCO MTT-3600 ChainSaw

EFCO MT-3500 ChainSaw EFCO MT-3500 Starter assy

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