September 2019: Continued - New carburetor
Finally bought new carb. It was available ready stock at Muthoot Yamaha Spares, Killipalam. These guys never let me down.
Carburettor Assembly - 21C-E4901-30 - ₹ 5,227.00
Cost was almost twice that of Pulsar series (not NS/AS series).
Comes from second series of FZ v1. Made in India. Final version was twin cabled.
Also got new fuel cock. Previous one was changed in 2012.
Made by UCAL
Petrol Hose with Clips - ₹ 20.00. Bought this one just for the clips, but eventually used it.
Half meter of black as well, ₹ 20.00.
Started assembly. The choke parts.
Met the first roadblock. Cable was different. Needed the longer one.
Called up my friend Sunjay, who is a long-term silent TAI reader, to call up the Yamaha spare distributor, Moto Wheels, whom he is acquainted of to get the part number. Manager there is Nikhil George, who is a very knowledgeable and helpful guy. He has arranged spares for many FZians in out Facebook FZ community. Didn't know him personally, so bumped Sunjay for this. Got the part number from him instantly. Again, the neighborhood guy had stock, the Spark Automobiles.
Accelerator Cable - 21C-F6311-10 - ₹ 230.00
It was ₹ 15 cheaper than my previous version.
Thought adding a fuel filter wound be a better idea and got from them as well. It was MICO Bosch one for Hero Hondas.
Fuel Filter - MICO Bosch F002H20218-8F8 - ₹ 18.00
Old and new part numbers.
New one is longer by an inch.
Decided to install fuel tap first. Drained again.
Old versus new. New one is shorter. Factory fitted one has similar dimension.
Had O-ring with it. Forgot to buy silicone grease.
Installed it. Removed tank this time.
Removed fuel float and cleaned them as well. They act weird in most of the FZs. After cleaning, it blinks a bar even when it hit reserve. Before, it was no bar when there was at least a liter to reserve. Also it used to show only 4 bars with full tank. After cleaning, it shows 5 bars.
Again rain god cheated.
New vs old carb. Think Yamaha added bigger throttle lever for better leverage. Heard some of the the earlier FZ owners complaining of wrist pain with tight throttle.
Breather and drain tubes came attached with it. Breather tube was missing in mine. I remember the other end connected over top of air filter cover, but it went missing at some of the workshop visits, don't remember when.
New carb with fuel filter installed.
Now everything solved and working perfect. First starting was troublesome, had to push start. Didn't mess with factory setting, let it be. It's a bit lean. No drop in performance. Mileage tested was 40-42 kmpl range. Still hits factory claimed 109 kmph.
Total damage for the carb DIY.
Accelerator Cable - 21C-F6311-00 - ₹ 245.00
Accelerator Cable - 21C-F6311-10 - ₹ 230.00
Carburetor Assembly - 21C-E4901-30 - ₹ 5,227.00
Carburetor Diaphragm - 21C-14545-00 - ₹ 870.00
Choke Cable - 21C-F6331-01 - ₹ 115.00
Fuel Cock Assembly - 21C-F4500-20 - ₹ 220.00
Fuel Filter - Bosch F002H20218-8F8 - ₹ 20.00
Ignition Coil Assembly - 21C-H2310-00 - ₹ 249.00
Petrol Hose - ₹ 20.00
Petrol Hose with Clips - ₹ 20.00
Plug Cap Assembly - 20P-H2370-02 - ₹ 75.00
Valve Assembly (Carb Slide) - 21C-14340-00 - ₹ 1,570.00
Total - ₹ 8,861.00 out of which ₹ 2685.00 went down the drain for the carb slide and diaphragm and old version throttle cable. Plus a can of Wurth carb cleaner worth ₹ 350.00.
When I gave it to Rider's Garage a year back, he asked to change the carb as well. I tried cleaning and it worked well for a year. Symptoms of carb issue face then was similar to the current ones.
1. Lag in low rpm.
2. Check engine light glowing when maintaining or stuck at the end-of-lag rpm, say around 4k rpm.
3. Check engine glowing at 6k rpm.
4. Thick black soot on spark plug.