Rebuild motor GP1200, extra inspection

Engine mounts

All condition are good

Make sure engine bottom bolts tension with torque-wrench.

Drain oil and check inside and cleaning.

Check and clean oil filter. Check work of oil level sensor.

Fuel tank, drain all fuel

Found water about 200cc from bottom of tank

Inspect fuel sender

Res fuel line pipe hit or very close the bottom cover and this may cause of choke fuel flow and make a fuel lean.

It's like a this from another angle

Cut bottom of pipe.

Fuel cap

Seal rubber been damaged. Needs new seal.

This may cause water get into fuel tank.

Pressure test of fuel tank with sender, fuel tap, fuel hoses. All good.

Rebuild motor GP1200, measure warpage

Another important inspection of when rebuild motor.

Measure warpage of flat face of engine parts.

Use straightedge and thickness gauge.

Cylinder is check cylinder top, bottom and exhaust side. This cylinder is all good.

Crank case top is good.

Cylinder head is out of specification. Needs resurfacing.

We check all parts when rebuild job for avoid pressure leak problem.

Rebuild job is not just dismantle parts and assembling parts, must needs check and inspect parts.

Just local cruising from water and road

7:30am started cruising

Heading to Surfers Paradise

Surfers Paradise

4pm at Burleigh Heads, back of view is Surfers Paradise

Q1 tower  323m

View of Surfers Paradise

Rebuild motor GP1200, check crank shaft condition

This time just top rebuild but better to check crank shaft conditon.

Inspect crank shaft degree of twist.

This crank shaft is pass of inspection. This is very important when rebuild motor.

Rebuild motor GP1200

This ski is 1998model Yamaha GP1200. This GP1200 is still popular here in Australia because good for surf ride as right weight, powerful motor and small hull.

I heard piston slap noise when service this ski and now due to replace pistons.

This GP1200 needs replace piston every 100hr.

This customer requested me a rebuild so I dismantled motor.

Removed Exhaust pipe and Cylinder head

Ex side of cylinder

In take side of cylinder

In take side piston

Ex side piston

Amazing! all pistons are damaged as engine was still run and all cylinder had good compression because piston rings are not damaged. If this customer keep use more with this conditon may occur to more damaged such as piston will be broken pieces and then broken crank shaft  and crank case. It is so lucky to find problem before big damage.

Flushing connector,,,,,

When I serviced YAMAHA FX-HO,
I found bilge hose came off from strainer and that was damaged by coupling.
Bilge strainer is locate under the coupling.

I found damaged piece of hose and tube on the bottom of engine room.

 I removed coupling cover for replace damaged hose then I heard sound something fallen.

It was flushing connector, I found just under the coupling.

Other side was damaged like a cut half.

So customer dropped this connector before and when he ride may be after jump or something this connector stuck between coupling and coupling cover like a above picture. Also then this connector hit and pick of bilge hose.

Carbys disaster

Hi every one,
I show some picture of carbys from GP1200R today.
This ski was sitting for long time more than 6 month and now engine won't start.
Inside of carbys are damaged by corrosion very much.
Must be water sitting inside of fuel tank.

Pain in the ass !

Hi everyone, how is your jet ski life.
Here is Gold Coast keep good weather last one week but last night thunder storm was heavy rain.....

By the way I did jet pump service of Yamaha FX-HO but it was pain in the ass because snapped bolt of ride plate fixing bolt. I still hard to understand why Yamaha use hard type thread lock for these bolts. They should use silicon for these bolts or should use more strong bolts. When bolt snapped needs extra Labor for repair and remove broken bolts. This is very much pain in the ass mate!

Bolt was snapped 1 of 4 bolts and  another 3 bolts won't removed as I felt it will snap if go hard.

I dismounted ride plate but it was not easy.

Removed all rear exhaust sys and hoses for access to insert plate

Water box and exhaust hoses.

3 bolt were unscrewed safely because I heated top of insert nut.

Broken bolt stuck on insert plate.

Also pump fitting bolt was snapped,,,,,

It was so hard to removed broken bolt.

Total I spent 4 hr to these unnecessary job.

Not Good!

Hi everyone, sorry I didn't up date since new years day.

Since then it had bad news first, I was turning to age 44 at 4th I'm getting old man! second, this week Flooding tragic happened Toowoomba, Ipswitch and Brisbane. Some my customers are living Ipswitch and Brisbane, just I hope everyones safe and I'm feel sorry to all flooding victims.

My friends sent me e-mails and call me from Japan for worry about my safety. I'm fine, fortunately here is Gold Coast was not happend flooding.

Where is sunny days summer?

A happy new year!

A happy new year for every one.
I went to see the first sunrise at Burleigh heads but it was cloudy and couldn't see that.

I wish have a good time of New year's break for every one.

Merry Christmas!

Ｗｉｓｈ　ｙｏｕ　ｈａｖｅ　ａ　Ｍｅｒｒｙ　Ｃｈｒｉｓｔｍａｓ　ａｎｄ　ａ　Ｈａｐｐｙ　Ｎｅｗ　Ｙｅａｒ

Shop will close between 25th to 28th and 31st to 3rd of Jan.

Jet ski stunt show in Gold Coast

Jet ski stunt show just started at Sea World in Gold Coast.

Japanese Jet ski magazine Dec issue

This month they introduce of Kawasaki, Yamaha and SeaDoo 2011 new model also report of Free ride  World championship in Brazil.

Ultra 300 is just not only power up. This new Ultra has new Super charger sys, Trim sys, Cruise control sys, Fuel eco mode and etc.

. New VX serise with 1.8L motor from Yamaha. Motor is naturally-aspirated but light weight hull makes good acceleration and top speed.

New GTI from Sea Doo, new hull and come with iBR (brake and reverse sys), iTC (throttle control sys)
 

Freeride world championship was held at Brazil.

Christmas sale!

Now we have limited stock of RIVA t-shirt.
Good for Christmas present,,,,,

YAMAHA

KAWASAKI

RIVA

Size only L (US size)

Shoulder-width 56cm      Length 75cm

$33 inc GST + Postage$11 (only Australia）

Mail to info@jetskidoctor.com.au

                                                                      
                                            

Where is summer?

Hi guys, it was rainy weekend wasn't it?
It is December,where is summer?
5days no sunny day since Wednesday  rain, rain, rain,,

Still not much sunny days since September.
La Nina, this is the cause of rainy days to much.
I miss so much sunny day.
My wife always complain this rainy weather because it can't hung the laundry out.