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98 XC 700 twin, 8 years in storage question.

Matt Ramsdell

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4
Age
37
Location
New York
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USA
Years Snowmobiling
15
Snowmobile
98 XC 700
I have a 98 XC 700 that has sat in a shed for over 8 years. The last it was ridden, the water pump belt split. I have plenty of auto tech experience, however, new to specifics on sleds. Once apart to replace the belt, I noticed the water pump couldn't be spun easily by hand. I freed it up with a little screw driver in the oil injection pump tooth slot. It can now be spun easily by hand, however still feels dry (slightly catches every rotation or so). My question is whether it is normal for the bearings on the impeller shaft to set up a little after a long term storage? As I said before, these engines are new to me.
 

MrSled

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Weston, WI
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SideWinder
I have a 98 XC 700 that has sat in a shed for over 8 years. The last it was ridden, the water pump belt split. I have plenty of auto tech experience, however, new to specifics on sleds. Once apart to replace the belt, I noticed the water pump couldn't be spun easily by hand. I freed it up with a little screw driver in the oil injection pump tooth slot. It can now be spun easily by hand, however still feels dry (slightly catches every rotation or so). My question is whether it is normal for the bearings on the impeller shaft to set up a little after a long term storage? As I said before, these engines are new to me.

Did it pop the belt before it was put away or after you tried to turn it over?
 

Matt Ramsdell

New Member
Messages
4
Age
37
Location
New York
Country
USA
Years Snowmobiling
15
Snowmobile
98 XC 700
I would pull it apart to see what causing it. Sounds like a bearing or seal leaking causing it to freeze up.
Inside of the pull start/pump case is clean, other than belt debris. There is no external water pump impeller cover leak. Is it possible in this chassis to pull the pump shaft and replace pump bearings/seal w/out pulling the entire case? I'm assuming there is a specific remover/installer for the pump shaft seal and bearings.
 

MrSled

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Inside of the pull start/pump case is clean, other than belt debris. There is no external water pump impeller cover leak. Is it possible in this chassis to pull the pump shaft and replace pump bearings/seal w/out pulling the entire case? I'm assuming there is a specific remover/installer for the pump shaft seal and bearings.

It looks like it can be unbolted from the end of the block:
https://www.polarispartshouse.com/oemparts/a/pol/5037022df87002368411b962/water-pump-e981766

Here is more info on that sled:

https://www.polarispartshouse.com/oemparts/l/pol/503701e0f87002368411b93e/1998-700-xc-0981766-parts
 

Matt Ramsdell

New Member
Messages
4
Age
37
Location
New York
Country
USA
Years Snowmobiling
15
Snowmobile
98 XC 700
If this sled is an XC700 as stated it would be a direct drive water pump not belt.
IMG_1140.jpg
IMG_1141.jpg
IMG_1142.jpg
 

MrSled

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Messages
989
Location
Weston, WI
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Snowmobile
SideWinder
The bolts for the water pump are on the back side, pull the exhaust..
 


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