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--- tecnica:motori:honda_ntv650_carburetor [2025/12/19 10:35] – [Repair kits] niccolo
+++ tecnica:motori:honda_ntv650_carburetor [2025/12/22 17:15] (current) – [Repair kits] niccolo
@@ Line 46: / Line 46: @@
 ===== Fuel and breather pipes placement =====
-In the following photos you can see how the fuel line and the breather tube are positioned around the carburetors (the lower end of the breather pipe should be inserted into the binder, together with the fuel pipe). This is how I found them in my 1991 Revere, but I found other models having the breather tube going to the right side, in a mirror-like way.
+In the following photos you can see how the fuel line and the breather tube are positioned around the carburetors.
+{{.:honda_ntv650:ntv650-revere-carburetor-a.jpg?200|}}
+{{.:honda_ntv650:ntv650-revere-carburetor-b.jpg?200|}}
+{{.:honda_ntv650:ntv650-revere-carburetor-c.jpg?200|}}
+{{.:honda_ntv650:ntv650-revere-carburetor-d.jpg?200|}}
+The above is how I found the tubes in my **1988 NTV650J** Revere, but I have also a **1989 NTV650K** that has the breather tube going to the left side, in a mirror-like way. In this case the binder bracket on the right top cover can accommodate the choke cable.
-{{.:honda_ntv650:ntv650-revere-carburetor-front-bottom.jpg?200|}}
 {{.:honda_ntv650:ntv650-revere-carburetor-front-top.jpg?200|}}
-{{.:honda_ntv650:ntv650-revere-carburetor-rear-bottom.jpg?200|}}
 {{.:honda_ntv650:ntv650-revere-carburetor-rear-top.jpg?200|}}
 ===== Carburetors synchronization =====
@@ Line 78: / Line 84: @@
 You can find several carburator **repair kits** on the net, many of them are no-branded, mainly Chinese production. What you want to replace mostly will be the **float chamber gasket** and the **valve needle**, whose rubber may have hardened and deformed. It is nice if the kit contains also the other o-rings.
+{{ .:honda_ntv650:kh-1348-box-back.jpg?120|Keyster KH-1348 kit}}
+{{ .:honda_ntv650:kh-1348-box-front.jpg?120|Keyster KH-1348 kit}}
 I found that several kits have low quality and/or low design parts, especially the float chamber gasket may be too thin or does not perfectly fit the cave. A nice exception is the kit from **Keyster**, a Japanese company specializing in carburetor restoration kits. I purchased the **KH-1348 kit** specifically produced for the Honda NTV650 Revere 1988-1990 and it turned out to be of **excellent quality**. The kit contains:
-  * Gasket chamber
+  * 2 x Gasket chamber
-  * Needle vale
+  * 2 x Valve seat with washer, filter and needle
-  * Screw air
+  * 2 x Screw air with spring, O-ring and washer
-  * Spring air
+  * 2 x Drain screw with O-ring
-  * Jet main #140
+  * 1 x Jet main #140
-  * Jet main #135
+  * 1 x Jet main #135
-  * Jet slow #42
+  * 2 x Jet slow #42
-  * O-ring
+{{.:honda_ntv650:kh-1348-content.jpg?200|KH-1348 Kit Contents}}
-  * Washer
+The kit **does not contain** the stem holding the main jet nor the little oval gasket of the air cut-off valve, but I was **particularly pleased with the float chamber gasket**: the shape and size are perfectly similar to the original.
+It seems that also the Keyster kit **K-976EK** is compatibile with the NTV650 Revere, it contains fewer parts, but it contains the same rubber parts as the **KH-1348** kit, plus the oval O-ring of the air cut-off valve. Another kit from Keyster is the **K139** (also labeled **NTMOR-007G**), which includes only the float chamber gasket.
+===== Do not use red paste gasket sealant! =====
+I once installed a float chamber gasket whose size I didn't trust, so I added some **red gasket sealant**, by **Würth**. The result was disastrous: after less than a year and about 2000 km, the red paste dissolved in the fuel and formed a sludge in the carburetor float chamber. Naturally, the bike began to have idle problems and backfiring. Cleaning the inside of the carburetor was a pain, luckily **nitro thinner** seems to dissolve this red sludge.
+{{.:honda_ntv650:carburetor-red-paste-gasket-a.jpg?200|}}
+{{.:honda_ntv650:carburetor-red-paste-gasket-b.jpg?200|}}