[SGFOREMAN]

I must be living under a rock, I just found you guys last night .
Site is filled with great info
I have a 96 400, I know this is the 450 topic area. But not much going on in the 400 area.
Maybe someone here could help me, I installed the triangle snork kit and dynojet stage 1 with kn filter
1st, why place a washer above the clip on the needle, per instructuions leaving stock spacer (washer) under clip ?
2nd, I asume the purpose of the crankcase vent is to keep water out, the 400 does not run it back to the air box , so can I just extend it up to the headlight area or higher as I did with my carb vent, which brings up 3rd question my carb seems to only have 1 vent unless I'm missing something?
The bike runs fine after the install except for a slightly noticable hesitation on midrange acceleration? any suggestion?

 

[dirty4man]

welcome, no not much in the 400 section, Nice looking 400. Looks like it has been taken care of. I have a 98 foreman 400, they are great bikes, just alittle shy on ground clearance. On the DJ kit, that is just the settings they got the best results from, so this gives you a good starting point. No two bikes are the same, so some adjustments will be needed. This is something that you are going to have play with to get it set right. On my 400 I'am running a 1.5" custom snorkel, stock exhaust and the factory OEM 130 jet. I just moved the needle to a richer setting and adjust the air/fuel mixture as needed.
Where was the crankcase line hooked up before? The crankcase vent will be fine running it up to the pod or along side of the snorkel. Just make sure to install some kind of filter on the end of it. Same for the carb. vent, pod or on snorkel.

You didn't list what size jet you where running, I assume a DJ126
As far as the hesitation, I would try moving the needle around to different settings. The needle is easy to move so I would try this first. Also try different setting on the air/fuel mixture, about 1/4 turns each try.

 

[SGFOREMAN]

Yes I am using the dj126 jet, needle on the third groove with stock washer under it and dj kit washer above it
Why a washer above it? I just can't fiqure that out ?

The crankcase vented just teed off and one side went down beside carb drain and the other up to side of gas tank by original intake air tube

 

[SGFOREMAN]

oh yeah , what about cutting the spring in the 400 ? would that help with the throttle response? seems others are having hit or miss luck.
Are is the difference really worth it?

 

[dirty4man]

QUOTE ("SGFOREMAN":2lfq54j4)

Yes I am using the dj126 jet, needle on the third groove with stock washer under it and dj kit washer above it
Why a washer above it? I just can't fiqure that out ?

The crankcase vented just teed off and one side went down beside carb drain and the other up to side of gas tank by original intake air tube

the extra washer should be with the stock washer, with the extra washer below it, it puts the setting between the groves of the needle raising it alittle, you can also try removing it to see how it run.

 

[dirty4man]

QUOTE ("SGFOREMAN":2g51alb2)

oh yeah , what about cutting the spring in the 400 ? would that help with the throttle response? seems others are having hit or miss luck.
Are is the difference really worth it?

I cut both my 450 and 400 spring, I couldn't tell on the 450 when I done it, was installing other mods at the same time. The 400 I didn't ride it enought to notice a difference. This is the wifes bike.

 

[SGFOREMAN]

Thanks for the info!
I'll get back to work on it tommorrow

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[Railroader]

That sure is nice lookin' for a 96 model. You must've just started ridin' it .

 

[SGFOREMAN]

I actually bought it a year ago from a retired elderly man that had left it in a shed for 6 years , never ridden , He had it serviced and checked out at the dealer before he sold it. couldn't have had more than 50hrs according to his son that had a worn , much abused beatup 2001 45.
A tree fell on the shed and I had to replace the front rack and headlight assy,
then i proceded with the mods , just put on snork so I can go play with the jet skis