Contents: 1. Encarwi “Tomos” 2. Encarwi “Batavus” 3. Encarwi “Trac”
4. Encarwi Jets 5. Encarwi Info 6. Encarwi “Early” 7. Bing Jets
1. ENCARWI A83, 88A85/102, 88A85/103
– Located above engine, difficult to remove. – Serviceable from sides. – No choke cable. Choke is part of throttle.
Pic Number Description Price Remarks
a 209070 carburetor A8300/000 N/A Ø12 1976-83
b 000000 carburetor 88A85/102 N/A Ø12 1980-84
c 000000 carburetor 88A85/103 N/A Ø12 1984-85
1 209116 short 3.5 jet #46 $18.0 =0.445
1e encl46 long 3.5 jet #46 $15.0 =0.445
2 206765b l-holder for short jet $25 see below
2e 206765e l-holder for long jet $20 see below
3 209118 slide Ø14 426 w/hole $18 auto-choke
4 209003 spring Ø9.5 x 42 $5
5 206763 carb top screw-on $24 M18x1 thread
11 206770 float with needle $35 used only
12 206772 float top with seat $25 new
13 206771 gasket for float top $6
14 206773 banjo black plastic $15 breaks easy
14 mbanjo banjo metal upgrade $12.0 w/2 washers
16 206775 banjo bolt $7.00
17 206774 fuel filter all metal $15.0 clean & reuse
18 027053 screw M4 x 10 slot $1.30
20 027079 clamp bolt $5
24 200384 air filter metal mesh none...0
25 209215 air box (silencer) $20
26 209216 junction sleeve rubber N/A gets hard
27 209217 inlet tube connector $3
28 209579 inlet tube (not shown) $3
30 200382 intake gasket thick $8
32 217315 intake manifold oil inj N/A w/M6x1 hole
33 209085 intake manifold $22 OD 16, ID 12
34 031932 lock washer M6 $0.25
35 044284 hex bolt M6 x 22 $1.00
Left, 1974-83 Tomos carb, Encarwi A83, bare.
The jet and jet holder unscrew from the side hole.
The jet can be cleaned out easy, on the roadside.
Right, 84-86 Tomos, Encarwi 88A85/103, complete.
The side hole is blocked. Jet access is from bottom.
The engine must be lowered to access the jet.
Jetting/servicing is ten times more difficult.
Encarwi 88A85/103
At right is a 88A85/103 with the non-removeable jet-holder-spray-tube removed. The jet is a 4mm thread, not 3.5 like all the other Encarwi jets. This one was not a tight fit and needed epoxy to hold it. When the jet was unscrewed the whole brass tube turned.
2. ENCARWI S8A, S23, S22, S25, 88S25/101
– Located behind and below engine – Needs longer throttle and choke cables.
Pic# Number Description Price Version
a 487180 carburetor S22 (Ø12) N/A 30mph
56 jet, Ø14 slide 405, Ø16 air inlet
b 541780 carburetor S25 (Ø12) N/A 30mph
56 jet, Ø14 slide 167, Ø16 air inlet
c 481790 carburetor S8A (Ø8 ) N/A 25mph
52 jet, Ø14 slide 190, Ø14 air inlet
d 486795 carburetor S23A (Ø8) N/A 20mph
50 jet, Ø14 slide 190, Ø14 air inlet
e 5417xx carb 88S25/101 (Ø12) N/A 30mph
56 jet, Ø14 slide 188, Ø16 air inlet
1a 541729 orig short jet #56=0.523 none 30mph
1a 335200 generic short #52=0.520 $4.00 subst.
1b 335000 generic short #50=0.500 $4.00
1c 334900 generic short #49=0.490 none subst.
1c 481727 orig short jet #52=0.493 $5.00 25mph
1d 334800 generic short #48=0.480 $4.00 subst.
1d 481726 orig short jet #50=0.478 none 20mph
2 206765b long holder for short jet $25 see below
2e 206765e long holder for long jet $20 see below
3 481758 throttle slide #405 N/A S22 30mph
3a 561742 throttle slide #167 $35 S25 30mph
3b 5617xx throttle slide #188 N/A 88S25/101
3c 486723 throttle slide #190 $25 25 & 20mph
4 209003 spring Ø9.5 x 42 $5
5 206763 carb top screw-on $24 M18x1 thread
9 481746 idle screw M4-0.7 $12 can use M4
10 481747 spring Ø4.6,Ø6.6 x 9 $3
11 206770 float with needle $35 used only
12 206772 float top with seat $25
13 206771 gasket for float top $6
14 206773 banjo black plastic $15
14 mbanjo banjo metal upgrade $12.0 w/2 washers
16 206775 banjo bolt $7.00
17 206774 fuel filter $15.0
18 027053 screw M4 x 10 slot $1.30
Left 1970’s original float, right 90’s replacement
20 481724 clamp bolt $5
21 481743 choke plate $7
22 481745 bolt choke pivot $3
23 481744 spring choke $3
24 200384 air filter metal mesh none...0
25a481713 air box (inlet 16mm) N/A 30mph
25b481734 air box (inlet 14mm) N/A 25 & 20mph
26 481733 rubber band N/A
27 481735 wire clip $8
28a481793 intake tube 16 id N/A 30mph
28b486781 intake tube 14 id $5 25 & 20mph
3. ENCARWI H12, H8 CARBURETORS
a 1 561782 $220. carburetor H12 (30 and 25mph)
a 1 56xxxx $000. Ø12 with #56 jet
b 1 561787 N/A carburetor H8 (20mph version)
b 1 56xxxx $000. Ø8 with #46 jet
1a 1 565756 none orig. short jet #56 =0.523 mm
1a 1 335200 $4.00 generic short jet 52 =0.518 mm
ae 1 encm56 $12.0 orig. med. jet #56 =0.523 mm
1b 1 209116 $18.0 orig. short jet #46 =0.445 mm
be 1 encm46 N/A orig medium jet 46 =0.445 mm
2a 1 491722 $40.0 short holder for s. jet see below
2e 1 491722 $30.0 short holder for m. jet see below
3 1 561748 $25.0 slide throttle Ø14 (H12) #3
3a 1 561742 N/A slide throttle Ø12? (H8)
4 1 481759 $10.0 spring throttle Ø9.5 x 44
5 1 561721 $25.0 carb top white plastic
6 1 046430 $7.00 rubber cover over carb top
7 1 481739 $0.50 screw M5 x 15 slot
9 1 206770 $35.0 float with needle, good-used
10 1 206772 $25.0 float top with seat
11 1 206771 $6.00 gasket for float top
12 1 mbanjo $12.0 banjo metal with 2 washers
13 2 swash8 $1.00 banjo seal washer 8mm
14 1 206775 $7.00 banjo bolt
15 1 206774 $15.0 fuel filter
16 2 027053 $1.30 screw M4 x 10 slot
18 1 561740 $5.00 idle screw M5-0.80 x 16
19 1 481747 $2.00 spring idle screw Ø5,Ø7 x 10
20 1 561743 N/A choke slide
21 2 561745 $2.00 o-ring for choke 1 x 4.0
22 1 561747 choke cable wire
23 1 491724 $8.00 spring choke return
25 1 561795 N/A air box with filter good used
26 1 823514 $0.60 screw M5 x 30 phillips
27 2 561714 N/A air filter screen
28 1 561713 $5.00 air filter foam strip
Encarwi H12, with no top, on Trac M56 engine
4. E
NCARWI JETS
Encarwi Jets: Most Encarwi carburetors use standard Bing 3.5mm jets. Those jets have a “short” head that is only 3mm long. To use a short jet, the jet holder must be for a short jet. But some Encarwi carburetors have longer 3.5mm jets with 8mm “medium” or 12mm “long” heads.
Encarwi “medium” jets for Laura M56
3 encm56 size 56 $12 thread=3.5 head=8
Encarwi “long” jets Laura M48, Tomos A3
2 encl45 size 45 $12 thread=3.5 head=12
2 encl46 size 46 $15 thread=3.5 head=12
2 encl52 size 52 N/A thread=3.5 head=12
2 encl56 size 56 N/A thread=3.5 head=12
2 encl58 size 58 $$7 thread=3.5 head=12
Encarwi jet holders
1 206765b long jet holder for short (Bing) jet $25
2 206765e long jet holder for long Encarwi jet $20 can be a substitute for 3
3 491722e short jet holder for medium Encarwi jet $30
4 491722b short jet holder for short (Bing) jet $40
5. Encarwi Info
Before 1973, Tomos had Puch and Laura engines. The 1971 Tomos Automatic N had a Laura M48 engine with Encarwi carburetor. Tomos continued to use Encarwi on their A3 engine, until 1983.
1977 Flandria Bermuda
Encarwi A-type carb
Welcome. Encarwi (made in Holland, now the Netherlands) was a division of Bing (Germany). On US models, Bing-Encarwi carburetors were used on mopeds by Batavus and Badger, with Laura (Holland) engines, Flandria (Belguim), and pre-1986 Tomos (Yugoslavia).
Encarwi carbs on US models of Batavus and Tomos.
Top, S-series. Bottom, A-series (no idle screw).
Encarwi “A” series carbs had an “automatic” choke, controlled by a special twist throttle with thumb button. The choke button lets the throttle twist opposite, below “zero”. This exposes a hole in the slide valve, in front of the fuel nozzle. After starting, twist throttle and choke clicks off automatically.
A11 (8mm, Ø14 slide 408, jet 52-54), for 20kmh Laura M48 engine (Euro model)
A22 (8mm, Ø14 slide 108, jet 50-52), for 25kmh Laura M48 engine (Euro model)
A21 (12mm, Ø14 slide 202, jet 56-58), for 40kmh Laura M48 engine (Euro model)
A83 (12mm, Ø14 slide 426, jet 46), for 20, 25, 30mph Tomos A3 engine 1974-80+
88A85/102 (Ø12, Ø14 slide 426, jet 46) for 20, 25, 30mph Tomos A3 engine 1980-83+
88A85/103 (Ø12, Ø14 slide 426, jet 4mm #50, no jet access from side) for Tomos A3 1983-85
All of these jets have 3.5mm threads except for the 88A85/103 which has 4mm threads.
Encarwi “S” series carburetors had a “standard” choke, controlled by a small lever on the handlebar via a cable.
88S23A (8mm, Ø14 slide 190, jet 54), for 20kmh Laura M48 engine (Euro model)
S23B (8mm, Ø14 slide 190, jet 52-54), for 25kmh Laura M48 engine (Euro model)
S23A (8mm, Ø14 slide 190, jet 50-52), for 20mph Laura M48 Batavus 1976-77
S8A (8mm, Ø14 slide 190, jet 52-54), for 25mph Laura M48 Batavus 1976-77
S22 (12mm, Ø14 slide 405, jet 54-58), for 30mph Laura M48 Batavus 1976-77
S25 (12mm, Ø14 slide 167, jet 56-58), for 30mph Laura M48 Batavus 1977-78
88S25/101 (Ø12, Ø14 slide 188, jet 56-58), for 30mph Laura M48 Batavus 1978-80
Encarwi “H” series carburetors were designed specifically for the Laura M56 engine, later made by Trac (Daelim).
H8 (8mm, Ø12 slide ???, jet 46), for 20mph Laura M56 eng Batavus 1978-80
H12/102 (12mm, Ø14 slide 3, jet 56), for 25 & 30mph Laura M56 Batavus 1978-80
unmarked (12mm, Ø14 slide 3?, jet 56), 25 & 30mph M56 remake Trac 1982-85
Top, Encarwi carburetors, engine view, with slides slightly open, showing the idle air channels or slots or holes.
Bottom, the corresponding throttle slides, all 14mm diameter, bottom view. The pair of large holes is for the cable.
Substitutions or conversions: Any S-type slide can be drilled and machined to be made for an A83 or H12 carb.
The S-type slides (190, 405, 188, 167, 2) all interchange, but have different idle mixture idling behaviors.
The Tomos A3 slide 426 fits a Trac M56 with H12 carb, with only minor widening (drilling) of the sprayer hole.
The amazing Encarwi 426 auto-choke throttle slide (Tomos A3) is explained in four steps:
1. Full power – throttle cable is pulled all the way. The slide does not have to be there. Main jet controls the mixture.
2. Partial power -throttle cable is pulled part way. The slide limits the amount of air. The main jet controls the mixture.
3. No power (idle) -throttle cable is pulled slightly. The slide blocks most of the air. Idle slot size controls the mixture.
4. Cold start – throttle cable is not pulled at all. The choke jet hole and choke air hole in slide 426 control the mixture.
Substitutions or conversions: The S25 and A83 Ø12 carbs are the same, except for the throttle slide and idle screw.
The Ø14 throttle slides 167 and 426 are nearly the same, except the Auto type 426 has extra choke holes and cut outs.
Encarwi Carburator, from 1960’s or 70’s
6. ENCARWI “EARLY”
Carwi Carburator, from the 1950’s
Encarwi A30 carburetor
Encarwi A30 on
1960’s Flandria
You can see that these early Encarwi carbs have many things in common with the later ones. The most obvious thing is the angle of the throttle slide with the venturi. Most carburetors have the slide valve 90 degrees to the air flow, but Encarwi carbs are more like 60 degrees. The other thing unique to Encarwi is the “automatic” choke, indicated by the absence of an idle speed adjustment screw, the choke holes and cut-away in the slide, and an extra thumb button on the throttle control that lets the throttle cable go completely slack, below normal idle or “zero”.