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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-4000

Efco MT-4100-SP

Efco MT-4400

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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-3750 ChainSaw EFCO MT-3750 Clutch and brake

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