1994 grady white adventure 20

[napkinthief]

new owner first boat, its fricken great so far. 3 outings no major issues.

its got a v250 yamaha ox66 engine on it. thing has lot of power.

im looking for the oem service manual. either pdf or printed. can anyone help? i cant seem to find anywhere.

also where can i get the manual for the engine. previous owner just cleaned o2 sensors, replaced the lp fuel pumps. i want to keep up with the maintenance so it lasts forever (or as long as possible)

few issues to note:

1. throttle cable is sticky. i can shift to neutral or reverse no issue. fwd idle is not always in the same spot. sometimes, halfway through the acceleration range is the fwd idle. i removed the shifter cover, and looks like the ball clicks into its fwd idle spot properly, but engine is just stumbling there, almost halfway between fwd and neutral. itll fwd idle about 30% of the way through to WOT. the last 10% of range has a HUGE change in rpm.


2. the livewell (starboard side?) seems to have a broken aeroator. the switch doesnt do anyhting. where can i find the oem replacement?


3. the boat sits low in the stern. assuming due to the 250 motor. occasioanlly, when drift fishing. ill fire it up and it rides nice and level and calm/low wake. other times, same throttle applied, its throwing a ton of wake and not moving as quick. im assuming this has to also do with the throttle cable. twice already, even pushing to WOT, it doesnt wanna get up on plane and start moving. almost like its just plowing water.


4. it doesnt have trim tabs. im sure theyll help. recommendations?


5. what oil is recommended? previous owner used pennzoil xlf. i bougt a few to keep on the boat so i dont run out. he also said seafoam it at end of season every year, then clean the o2s and plugs



I appreciate your help!

 

[dingbat]

1. throttle cable is sticky. i can shift to neutral or reverse no issue. fwd idle is not always in the same spot. sometimes, halfway through the acceleration range is the fwd idle. i removed the shifter cover, and looks like the ball clicks into its fwd idle spot properly, but engine is just stumbling there, almost halfway between fwd and neutral. itll fwd idle about 30% of the way through to WOT. the last 10% of range has a HUGE change in rpm.

Your cables are out of adjustment

2. the livewell (starboard side?) seems to have a broken aeroator. the switch doesnt do anyhting. where can i find the oem replacement?

I would first check to make sure the fuse isn't blown.
Grady has used a couple of pump manufacturers over the years. Mine has a Rule Tournament pump which I believe is OE

3. the boat sits low in the stern. assuming due to the 250 motor. occasioanlly, when drift fishing. ill fire it up and it rides nice and level and calm/low wake. other times, same throttle applied, its throwing a ton of wake and not moving as quick. im assuming this has to also do with the throttle cable. twice already, even pushing to WOT, it doesnt wanna get up on plane and start moving. almost like its just plowing water.

The boat is rated to 230 HP.

The hull has a very fine line between moving, plowing and planing. If your plowing, your giving it too much throttle to "move" and not enough the plane.

4. it doesnt have trim tabs. im sure theyll help. recommendations?

I wouldn't own a boat without tabs. I have 12" x 12" Bennett's on my 226 which makes it a bit squirrelly. I would put 12" x 9" on an Adventure

5. what oil is recommended? previous owner used pennzoil xlf. i bougt a few to keep on the boat so i dont run out. he also said seafoam it at end of season every year, then clean the o2s and plugs

What runs best varies by motor but I run Evinrude XD 50 or Pennzoil Premium Plus, whichever is on sale at the time. Buying case lots saves $$$

Yamaha recommends running Ring-free continuously throughout the season

 

[napkinthief]

3. the boat sits low in the stern. assuming due to the 250 motor. occasioanlly, when drift fishing. ill fire it up and it rides nice and level and calm/low wake. other times, same throttle applied, its throwing a ton of wake and not moving as quick. im assuming this has to also do with the throttle cable. twice already, even pushing to WOT, it doesnt wanna get up on plane and start moving. almost like its just plowing water.
The boat is rated to 230 HP.

The hull has a very fine line between moving, plowing and planing. If your plowing, your giving it too much throttle to "move" and not enough the plane.



I guess this is due to my amateur boating skills. so if i give less throttle itll get on plane? sorry if im confused, i assumed the quicker you gave throttle the quicker itll get up. i will practice on my next outing. after adjusting the cables

 

[dingbat]

I guess this is due to my amateur boating skills. so if i give less throttle itll get on plane? sorry if im confused, i assumed the quicker you gave throttle the quicker itll get up. i will practice on my next outing. after adjusting the cables

If your pushing water your in the transition zone between idle speed and planing. You either need to slow back down to "idle" speed or jump over the hump to planing speed.

Either hammer the throttle to get up on plane then back off to the speed you want to go or stay just under plowing speed.

Grady's come on plane fairly level so there is no need to trim the drive down coming out of the hole. Trimming down is counter productive actually.

Trim the prop parallel to the surface of the water then hammer it. It will come right up on plane.

 

[napkinthief]

If your pushing water your in the transition zone between idle speed and planing. You either need to slow back down to "idle" speed or jump over the hump to planing speed.

Either hammer the throttle to get up on plane then back off to the speed you want to go or stay just under plowing speed.

Grady's come on plane fairly level so there is no need to trim the drive down coming out of the hole. Trimming down is counter productive actually.

Trim the prop parallel to the surface of the water then hammer it. It will come right up on plane.

ok great that makes so much more sense what was happening really appreciate the tips

 

[napkinthief]

dingbat i removed the cover and checked the cables today. it seems the shift cable is working ok. the throttle cable is not exactly. moving lever forward, it doesnt move the end of the cable until about 1" forward on the shift lever. then also moving it back, the cable moves, but the end piece that connects on the motor does not until about 1" back off WOT. also noticed the throttle cable is the only aftermarket piece its blue the others are all black yamaha cables. its also maxed out on the adjustment range, compared to the cable right below it.

couple q.

1. whats labor hours required to replace and reset the adjusment on the the cables? i kindve get what to do, but i think i rather pay someone to do it, since i only get on the boat once or twice a week i wouldnt want to waste a day messing with it.

2. the control box lever is "loose" itll spin a bit pushing fowrad and reverse. the cover is also broken it sits there but doesnt lock in. am i better off replacing both?


also i was able to get the boat on plane, by giving about 30-40% throttle then easing into more for speed. thanks for that tip. if i mash the throttle, it wont get on plane. i will be adding trim tabs also

 

[dingbat]

i removed the cover and checked the cables today. it seems the shift cable is working ok. the throttle cable is not exactly. moving lever forward, it doesnt move the end of the cable until about 1" forward on the shift lever. then also moving it back, the cable moves, but the end piece that connects on the motor does not until about 1" back off WOT. also noticed the throttle cable is the only aftermarket piece its blue the others are all black yamaha cables. its also maxed out on the adjustment range, compared to the cable right below it.[/quote]


[quote]1. whats labor hours required to replace and reset the adjusment on the the cables? i kindve get what to do, but i think i rather pay someone to do it, since i only get on the boat once or twice a week i wouldnt want to waste a day messing with it.[/quote] I have no idea. I changed both cables long ago. Wasn’t hard. Didn’t take long. Getting them adjusted was the worst part. it’s not as intuitive as it looks

[quote]2. the control box lever is "loose" itll spin a bit pushing fowrad and reverse. the cover is also broken it sits there but doesnt lock in. am i better off replacing both?[/quote] You can adjust the amount of force required to move the levers on most controls I’ve worked on. I would start there.


[quote]also i was able to get the boat on plane, by giving about 30-40% throttle then easing into more for speed. thanks for that tip. if i mash the throttle, it wont get on plane. [/QUOTE]Doesn't sound right. Shouldn’t have to ease into anything. Mash and go.

What prop are you running?

 

[napkinthief]

Doesn't sound right. Shouldn’t have to ease into anything. Mash and go.

What prop are you running?


im not sure, it looks like its a stainless prop. ill measure next time im there, saturday. also having a tough time finding a marine mechanic that can take a look. everyone seems to be swamped right now.