Carburetor - Vacuum Break (Cont'd)

EF & EC-168spec table

Temperature thresholds and clearance "R" specs differ by catalyzer and E.G.R. fitment.

Vacuum Break (Cont'd)

Temperature T °C (°F)	Models with catalyzer and E.G.R.	Models without catalyzer, Models with catalyzer without E.G.R.
T1	0 ± 4 (32 ± 7.2)	14 ± 4 (57 ± 7.2)
T2	20 ± 4 (68 ± 7.2)	31 ± 4 (88 ± 7.2)

Models with catalyzer and E.G.R.0 ± 4 (32 ± 7.2)

Models without catalyzer, Models with catalyzer without E.G.R.14 ± 4 (57 ± 7.2)

Models with catalyzer and E.G.R.20 ± 4 (68 ± 7.2)

Models without catalyzer, Models with catalyzer without E.G.R.31 ± 4 (88 ± 7.2)

Temperature T	Models with catalyzer	Models without catalyzer
Below T1	1.44 ± 0.13 (0.0567 ± 0.0051)	1.22 ± 0.14 (0.0480 ± 0.0055)
Above T2	2.42 ± 0.32 (0.0953 ± 0.0126)	2.15 ± 0.32 (0.0846 ± 0.0126)

Below T1

Models with catalyzer1.44 ± 0.13 (0.0567 ± 0.0051)

Models without catalyzer1.22 ± 0.14 (0.0480 ± 0.0055)

Above T2

Models with catalyzer2.42 ± 0.32 (0.0953 ± 0.0126)

Models without catalyzer2.15 ± 0.32 (0.0846 ± 0.0126)

3
In this condition, check clearance "R" between choke valve and carburetor body.
4
If out of specification, adjust "R" by bending tongue.