SKIS

General topics related to John Deere Snowmobiles
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RAT540
Posts: 215
Joined: Sun Nov 26, 2006 1:00 am
Real Name: DAVE
Location: ELYRIA,OH

SKIS

Post by RAT540 »

Any body know if the skis from a74 300 are the same as 75 800?
thanks dave
75 800 440
79 TRAILFIRE 440
79 KAWI INVADER 440
06 SKI-DOO MACH Z 1000CC
harleysportster
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Real Name: Pat Scott
Location: Southeast Pa.

Re: SKIS

Post by harleysportster »

I believe the front hoop is different between them and the 74 ski uses a 2 bolt runner , the 75 uses a 3 bolt runner.
'76 440 cyclone
'76 440 liquifire
'78 440 Cyclone
'75 JDX8 (sold to a member here)
'78 Liquifire(CrossCountry Clone)
'80 Liquifire(sold)
Matt
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Re: SKIS

Post by Matt »

Ski hoops should be the same but the shock mount is different. They switched from side-mounting the shock to over the leaf-spring.
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400brian
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Re: SKIS

Post by 400brian »

The ski design changed a bit most years, but the flat top loop was used from the beginning thru serial number 55000.
But like I said, 73s were a bit different than 72s, and 74s were different than 73s.

In '75 the 340/S came with the AM53578 round loop ski, and it appears that the production sleds above 55001 used that ski as well. In JDParts, it appears that all these skis used two stud wear rods.

That same AM53578 ski was used on Cyclones and Liquifires as well, but appears to have been upgraded to the 3 stud rod.

The drawings in JDParts may not be the last word on what is 100% correct. At any rate serial 55001 is towards the end of the line for the mid-mounts, most of the mid-mounts ran a flat top loop ski.

'09 Vintage Challenge Survivor, and I wasn't late for supper!
'10, '11, '12, '13,'14,'15,'16,'17, '18, 19, 20, 21, 22 Vintage Challenge Survivor !
72 400 restored, Father bought new in '71
73 X8 restored
'74 340 green machine
'74 X8 9 time VC finisher
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