Just bought an 02 srx 700 lack of power

[Yamitriple]

Hey you guys just got an srx, sled needs cleaned up a bit but I noticed that the rpms at wide open are only 8000, and it's not making good power. I'm just curious on what you would think this could be, I plan to clean carbs and check power valves but if there is anything else I should look for I'd appreciate any help thanks

 

[riverman]

did you try a new belt?

 

[Yamitriple]

Okay. Found the problem PTO and mag PV was pulled through and center had the cable snap. How do I go about fixing this as quickly and cost affective as possible

 

[SRXChris]

Need a new cable and you can repair them using method in this thread, should go to 8500 after that. Clean them while your fixing and repairing.

https://totallyamaha.net/showthread.php/77037-Pull-through-prevention-with-pictures

 

[SRXChris]

They sell new powervalves at dealer as well, not cheap.

 

[Yamitriple]

They sell new powervalves at dealer as well, not cheap.

I've went the expensive route and just ordered 3 new ones and a cable 360 bucks.. but with all three being bad is there a chance in damaged the pistons? The sled has around 130 psi in all 3 holes but looking into pv opened front of the piston looks a little scored.

 

[Whammy]

Think you found you're problem..

 

[Yamitriple]

Think you found you're problem..

Top end tho should be good tho right? Those pull throughs dont hurt the top end do they

 

[AUGDOG]

Yes they do, when those valves open they are what give you the top end power

 

[Whammy]

Top end tho should be good tho right? Those pull throughs dont hurt the top end do they

Bout a 20mph
dif...…...

 

[MURDER YAMAHA]

I think he is asking about damage to the top end of the motor.

 

[Yamitriple]

I think he is asking about damage to the top end of the motor.

Yes that's what I ment thanks murder, I ment hurt the pistons or rings. seemed like it was much slower than a 20 mph difference. It is much slower than my sx 700 w pipes.

 

[Yamitriple]

If I'm not mistaken this sled should spank my sx 700 even with pipes? It also has heel clickers in it which I'm very excited to play with!

 

[MURDER YAMAHA]

I will be about even , maybe a bit faster than a piped redhead.
Keep in mind, a readhead is going to be around 50 lbs lighter than a SRX.

 

[Yamitriple]

I will be about even , maybe a bit faster than a piped redhead.
Keep in mind, a readhead is going to be around 50 lbs lighter than a SRX.

The power valves are on back order until March 30th... you know of anyway I can get a set of used ones?

 

[Yamitriple]

Anybody know a good place to find the tubing that is used in that repair mod earlier on in this thread?

 

[snomofo]

Anybody know a good place to find the tubing that is used in that repair mod earlier on in this thread?

Just about any auto parts store.

3/16" hydraulic brake line

 

[Yamitriple]

Also anybody know how important the little plastic slip on washer around the main jet is?? Its for some reason been discarded from the carbs on this sled lol

 

[Maim]

helps keep gas around the jet.

 

[mrviper700]

the little plastic cup that sits around main jet will not effect any power output, I eliminate them when they are loose and ill fitting, never had any problems yet. For your powervalves just take to a machine shop and have them repair the ends via mill off old and tap the valve, thread in a steel bolt and turn the head on a lathe, drill and slot the end and it will last forever. The valves don't hit the pistons because theres a stop cast into the cylinders to keep it from contacting piston.